So I got a bluetooth controller as a gift but as I was looking for keymappers, either they were not free or they aren't working as i would like them. And I would really like to use it for some games that do not have "built-in" controller support, but because they don't have that much buttons they would be easily mappable. Thank for the replies in advance!

Here's a little link between Vizta and Moonton: the developer branch of Moonton was acquired by Vizta Ltd. In 2020, probably the same year when it was banned. This game seems legit, except for the loading screen, everything is identical. And the biggest upgrade is that now i can use my Play Reward Money to buy diamonds. So should you start playing right away? Well I'll say wait. Moonton will make an official announcement soon enough, untill then make a smurf and play on that one.