My son will be 2 in June and we’re going through similar. Constant attitude and tantrums over not getting what he wants. No longer wanting to eat foods he used to eat. Only wants snacks. It sucks. It’s hard and he’s also driving me nuts haha. I feel like it’ll be a while before we get through it but we will eventually. I just try to redirect as much as possible when he’s having his fits. Part of me also thinks it’s because he’s getting his 2 year molars. He’s usually a different child in my opinion when he’s teething.
My toddler is just about to turn 2 and I am experiencing the same thing. He only eats like 1 or 2 bites if I'm lucky. He is definitely trying to push limits with everything right now. Everyone tells me it's a phase and he'll grow out of it, but that doesn't make it easier. I don't have any advice, but you are not alone!