It may not be the best, but I use Fotor to edit my memes. It works, and I don't have neither the skill to use a real photo editor, nor the space to download it, nor the money to buy it
Hi, I've just commented on the video on YT :). My tips for you: Your thumbnails could improve a bit - I use MS publisher or fotor.com (this one is really easy, just upload a picture and put some text in. And it's free). Don't use white/bright text on a bright background, there needs to be contrast so your viewers can read it :)
First I upload a template on lapwing and make a meme there. Then I use fotor.com to combine more photos to the original meme. (Made the gru meme an kapwing, saved it, and then uploaded it in fotor to add the losing screen. Then I saved the whole thing)