>>102595509 (OP)Shit advice :
Don't do anything dumb ass, join their community discord or whatever and be normal.
Genuinely if you just stay normal, and they think you're funny just keep that up. Eventually you'll be a friend.
Then maybe one day you meet up with them and some other friends at a con or something, do that once. Then you can maybe try and asking them to hang out alone.
If you can get through all that, you're probably not looking at them as a streamer and instead they're a friend you have feelings for (if you still do when the veil is gone). On your own after that, hopefully you can understand them enough to know if you wanna risk the friendship to try and be with them.
Maybe you realize losing that friend would suck way more then the idea of hitting it on a girl who streams for a hobby and you decide it isn't worth it.
Real advice:
Get ripped and make sure to interact with them a bunch on socials
Take gym photos and be flirty in comments
If their DMs are open after a bit just send them a dick pick