Remember the adage: show don't tell? So instead of Timmy said wisely, show him thinking like knitting his brow, pinching his nose, etc. For example: Timmy sucked in his breath and stared at his nemesis. "I'm better than you."
Highly recommend The Emotion Thesaurus by Becca Puglisi and Angela Ackerman. The writers have a series of writing thesauri I think are worth looking at.
I'd recommend The Emotion Thesaurus. It really helps with finding different body language and internal sensations for different emotions. I'm still rifling through it, but I guess when you've used it often enough, you will remember what you can use when. Or just make a shorter list for yourself with those reactions that work for your characters.
Being descriptive is a challenge, and can be daunting. However, what comes to mind when you describe a setting? It's what you hear, see and smell. Depending on the situation, touch and taste. Those can be difficult to explain without experiencing it yourself, or at the very least, read enough to have a vague idea. As another comment said, reading is you best option. Also, I highly recommend The Emotional Thesaurus
It's a magnificent guide on description, there are 7 books in their series. I cannot stress enough how amazing these are. I have 6 out of 7. If you're like me, and need help sometimes, they will give you a sudden boost of confidence. If I had to choose only two I'd go with The Emotional Thesaurus and Emotional Trauma Thesaurus. Believe me, I know how hard writing can be, and we all need assistance at times. Best of luck, and happy writing.
Buy the book the Emotions Thesaurus. Within it there’s explanations of internal and external manifestation of the emotion identified. Also provided are examples of to what the emotion becomes if not resolved. https://www.amazon.com/Emotion-Thesaurus-Writers-Character-Expression-ebook/dp/B07MTQ7W6Q/ref=mp_s_a_1_3?dchild=1&keywords=emotions+thesaurus&qid=1619008841&sprefix=emotions+the&sr=8-3
Look into The Emotion Thesaurus by Becca Puglisi.
There is a whole fantastic series for just this thing.
Another great resource is the Emotions Thesaurus. It helps you find other ways to describe your characters’ emotions besides “she was angry.” Showing how your characters are feeling, what they are experiencing on physiological and mental levels, will go a long way to helping readers connect with them.
You'll actually want the second edition, here
It really is. Just make sure you get the second edition!
The Emotion Thesaurus: A Writer's Guide to Character Expression (Second Edition) (Writers Helping Writers Series Book 1) https://www.amazon.ca/dp/B07MTQ7W6Q/ref=cm_sw_r_cp_tai_XGXT9H3CZ36X2KWBACE8
This series of reference books are helpful IMO:
The Emotion Thesaurus: A Writer's Guide to Character Expression (Second Edition) (Writers Helping Writers Series Book 1) https://www.amazon.com/dp/B07MTQ7W6Q/ref=cm_sw_r_cp_api_x.ZYFb04W6T50
Another fun gift is this:
The Writer's Block: 786 Ideas to Jump-Start Your Imagination https://www.amazon.com/dp/0762409487/ref=cm_sw_r_cp_api_fabc_-a0YFbYVJF23B
What kind of novel do you want to write? Read novels that are similar. Also, I've found that subs like r/WritingPrompts are helpful in that it can get you into practicing writing daily without much pressure. Practice, practice, practice, is my advice.
I've started to read the first in a series of books about developing characters, which has helpful information. I will link it below:
https://www.amazon.com/gp/product/B07MTQ7W6Q/ref=ppx_yo_dt_b_d_asin_title_o00?ie=UTF8&psc=1