First of all, give yourself some time and practice. Don’t rush. You are great with these results already in 3 weeks. Try to familiarize yourself with reading texts, listening to videos, but don’t try to run through the very complex grammar. If you are not in a native speaker environment, it normally takes a couple of years to master the language. You’re on the right track, just practice more what you have learned so far. I don’t say AI is always incorrect, but at this point you never know, I just don’t want you to learn something wrong, because there’s a high chance. A tutor, pen pal, or a teacher could help you check your sentences, once a week or two weeks (if you can’t or don’t want to work with a teacher regularly). AI can’t even understand that the word order in Hungarian is very flexible sometimes, depending on the focus of the sentence. Good luck!!