Don't most stock brokers support options these days? I know Schwab does - you just have to apply first. (unless you meant crypto options >.>)

You can trade bitcoin options on deribit. I believe they are cash settled though, so maybe that won't count for you.

Not BTC options. Just options. They have the exact same pay off structure that you're a fan of.

Microstrategy (MSTR) call options

deribit.com

etoro?