Love the core idea (love some balatro type games) and that you did it in godot as well. I agree with the other commentor that sound would do a lot for you too but still love it.
From a balance perspective, I feel like I was personally frustrated with not having more choice in where to distribute cards since every 4th move is forced/not being able to put 2 cards in one spot before putting 1 card in all felt like it limited my strategic options too much, but I still found it very addictive overall.