i contacted rollbit and a few others and they claim the provider increases them as they wish and theyre legit $200 for NCAAF lol
Seriously, they only limit your bet to $200? If that's true, it doesn't sound like the place for high rollers. Maybe you should consider trying out other sportsbooks. I've used sportsbet.io for a single bet of $1,000, and I had no issues withdrawing my winnings. Give it a shot, mate.
200 USD is quite a very low amount even for a "medium" gambler
Why just focus on crypto sportsbook? if they are compliant with regulation they are observing more or less the same rules as a classic sportsbook so it's something really similar....
In this case, I think that a nice option are offered by FIAT sportsbook like "betfair" since these exchange games allow "infinite" money to be gambled (because you're playing against other gambler). If OP has not issue with KYC/exchange crypto I will have a check also on this...