If you've already eliminated processed food and feel better, but not that great then I encourage you to try Carnivore. (Or keto/low-carb, but Carnivore is very simple and easy to follow, after a couple weeks/months).

It cures so many issues.

Follow these folks: Dr Shawn Baker - book, The Carnivore Diet - a great overview, easy to read. He also has a great podcast, and a great youtube channel Dr Ken Berry - youtube channel, very highly regarded Plant Free MD - carnivore podcast, good stuff, by Dr Anthony Chaffee. He's also on youtube quite a bit, I'm not sure if he has his own channel

Also read The Big Fat Surprise - book by Nina Teicholtz - outstanding book, won a lot of awards, this is what started me out, in terms of questioning standard nutritional advice. Not a ton on carnivore diet in particular, but lots of info on how fruits/veggies/fiber/whole grains aren't as great for you as we've been told, and also on how cholesterol is a bad endpoint for measuring cardiovascular health (because people with lower cholesterol often have shorter lifespans), and how meat, eggs, and dairy are actually very healthy for you. Toxic Superfoods by Sally Norton - interesting book about a whole class of fruits/veggies that contain a specific plant toxin (oxalate) that doesn't get nearly enough attention, and might be one of the things on a vegan diet that can cause real problems.

If you don't want to read any books, check out online interviews, there's loads out there.