I wanna stream but my cpu is lacking, what would be the best cpu thats still compatable with my motherboard Asus - M5A97 R2.0 ATX AM3+ Motherboard
FX-8370 is the top processor for the Asus M5A97 R2.0
That's not a worthy upgrade from the FX-8350 so you'll need to go Ryzen if you need more CPU performance.
With that said, streamers have used FX-8350 satisfactorily in a 2 rig setup, so it is viable for that purpose. Your video card, and other settings are important factors too.
Then which Ryzen would be considered a nice upgrade that would still work worth the mother board
Ryzen requires a socket AM4 motherboard, and so it is not compatible with that AM3 motherboard.