I agree with all of this, Guadalupe.
Want to add, though, that eating less ultra-processed foods usually produces very clear non-weight benefits. Eating less healthy food often means the non-weight benefits are more subtle – but still there and observable nonetheless.
As you say, “it’s healthy so why not eat more” and my guess is finding an answer to this is the challenge for you right now. Sometimes just doing it (eating less of the healthy things) is the way forward, to experiment and discover what benefit may be there for you.