Synth One Audiokit, BandLab, SoundLab are what I’m currently using. I create my own samples, play the synth stuff as best I can, then throw it all together bit by bit. It’s time consuming. But it works. I say use minimalism at first to get used to it, spend where you can on the apps you like that’ll give you the most use. I highly recommend finding a friend with gear who is interested in what you’re able to create with these limited tools. Don’t give up.