Sounds like your nailing it tbh.
Checkout a cookbook called No Meat Athlete, I've found a few new dishes and it's great nutritional advice for rigorous exercise.
Only other advice is you can get frozen edamame which can come in handy when pairing with tofu etc...
Also Huel gang rise up
I’ll also add No Meat Athlete Cookbook, this author also recently wrote The Plant Based Athlete. Lots of whole food recipes in this one
NO MEAT ATHLETE COOKBOOK NO MEAT ATHLETE COOKBOOK
Although the title is self explanatory - it’s wfpb and also SUPER simple with a complex range of meals + prep + pantry needs
Buy a recipe book and start trying recipes. Over time, you'll develop the skills to make your own recipes and modify existing ones to your tastes. I suggest No Meat Athlete, for starters.
You can easily eat vegan at Taco Bell. That's one of the few places we can depend on to get vegan food in any decent size town, while out and about. https://www.tacobell.com/blog/how-to-eat-vegan Their customization options give you a lot more variety than that page would have you believe - use the app, as it makes ordering complex substitutions way easier.
Yeah, well I didn't know that, did I? ..and I still said it was a good question. My main reason for making that comment was so that other people didn't get rude.
Now then, as for your overall skill set (which the question wasn't about.. perhaps you're asking the wrong question?).. You need to pick up a Betty Crocker Cookbook. Period. The first few chapters are on planning, temperatures and portions, size conversions, substitutions.. absolutely invaluable for a beginning cook. I'm not going to provide a link for this book, You WILL find it at your local thrift store, because historically almost every young woman got one when she started learning how to cook. It's a rare day when I walk in to a thrift store and don't see at least one of them on the shelf. ;)
The vegetarian cookbooks on Amazon are a mess. Half of them are diet books. This one PROBABLY does a good job of pushing a balanced diet, but I doubt if it's a beginner book: https://www.amazon.com/Meat-Athlete-Cookbook-Plant-Based-Workouts_and/dp/1615192662/
Barnes and Noble lists this vegetarian cookbook as a good beginner cookbook, but YMMV: https://www.barnesandnoble.com/w/how-to-cook-everything-vegetarian-mark-bittman/1126178887
You're going to have a major hurdle to get over as the vast majority of meal planning resources are aimed at getting a balanced diet.. which is complicated by being a vegetarian. It is a very important step, however. The reason many older vegetarians look like a victim of some disease is because they never bothered figuring out how to get a balanced diet. All nutrition is important, but it is very difficult for vegetarians to maintain their daily allowance of proteins and fats (and nearly impossible for vegans). ..yes, fats. Girls in particular need a smidge of fat in their diets, it keeps those round curves round. ;) The point is that nutrition and meal planning IS important.. and doubly so for vegetarians. If being a vegetarian is something you plan to stick with, double down and study how to maintain a balanced diet. Your body will thank you in the end. :)
You're best bet on nutrition would be to start with a good multivitamin, and stick with it religiously. I have to point out that some vitamins work better in the morning, and some work better when you're going to sleep. The subject is way too deep for this simple post, but if you can find a company that you trust that sells a morning and bedtime multivitamin pair, stick with that. If not, you will be better off taking separate vitamin pills for each vitamin. It's a pain in the rear to study and maintain though. If it turns out to be more than you want to mess with.. stick with the multivitamin. ;)
Meal planning programs and websites do a better job of meal planning than books do. You can start here and look for one that tries to accommodate vegetarians: https://duckduckgo.com/?q=beginning+meal+planning
These days most cooks try to find apps that help them with recipes and meal planning on their tablets, because tablets are convenient to prop up on the counter and read while you're prepping and cooking (as long as you keep them dry). They even make apps (and some websites) that help you put together a grocery list to help you go shopping.
Once you 'find your feet' in the kitchen, I would recommend The Joy of Cooking as a second tier cookbook. A lot of places recommend it for beginners, but it's a bit complex. You'll be better off sticking with the Betty Crocker cookbook until you've got your kitchen sorted and feel comfortable cooking. :)
The No Meat Athlete Cookbook
https://www.amazon.com/Meat-Athlete-Cookbook-Plant-Based-Workouts_and/dp/1615192662
Everyday Vegan Cheat Sheet
https://www.amazon.com/Everyday-Vegan-Cheat-Sheet-Plant-Based/dp/1510768653
No Meat Athlete has a cookbook, as well recipes on the site: https://www.nomeatathlete.com/
Edited to add the Amazon link to the cookbook: https://www.amazon.com/Meat-Athlete-Cookbook-Plant-Based-Workouts\_and/dp/1615192662/ref=sr\_1\_1?keywords=no+meat+athlete+cookbook&qid=1656366790&s=books&sprefix=no+meat+ath%2Cstripbooks%2C82&sr=1-1
The first thing that popped into my mind was No Meat Athlete! The website (http://www.nomeatathlete.com) has a ton of helpful articles and tips and the podcast by the same name is also very informative and entertaining. The No Meat Athlete cookbook is on sale in stores and on Amazon (https://www.amazon.com/Meat-Athlete-Cookbook-Plant-Based-Workouts_and/dp/1615192662). I have made several of the recipes and they have all been amazing. I also like Minimalist Baker's blog and cookbook (simple, easy vegan recipes), the How Not to Die cookbook by Dr. Michael Greger, and Caitlin Shoemaker's Youtube channel "From My Bowl" (https://www.youtube.com/channel/UC0cxMY7jZ_kiE2bvykJffZA).
It’s a cookbook! https://www.amazon.com/Meat-Athlete-Cookbook-Plant-Based-Workouts_and/dp/1615192662 I remember making a similar one to yours out of this book. Hearty and great post-workout.