Hello there!
1. Yes, I will continue to make more games.
2. Yes, feel free to give ideas or suggestions.
3. Yes, I'm working as a solo game developer.
4. You can donate via itch.io here by clicking to download the game again, or via my patreon page (the link is in the main page of MKM).
It pleases me to hear that you've enjoyed the game! Thanks for the compliments, they mean a lot to me!