I'd be happy to help you with providing that info ;) I mainly use ko-fi as they have very low fees and if you earn enough you can just get the gold subscription (which is very cheap) which gives you a flat rate without any strings attached. I love their support. I also use itch.io to share Japanese language learning resources, people can download those for free but do get the option to donate for them. Then there is my KZfaq ad revenue which is not much but enough to make a difference. There are more way's that I'm working on right now but would prefer not to discus these inside of the comments but do feel free to send me an e-mail, you can find it on my youtube profile in the about section ;)

Thank you very much for your nice comment ^^ Gives me motivation to work on more helpful videos :D