Look at my signature. See any coincidences? Not one person on this forum has ever heard of sportbet dot one, so no, you were not recommended to that site by anyone here. It's obviously an imposter site, attempting to scam would be clients of the legitimate casino in my signature.
Sorry for your loss, but you've been tricked by a scammer.
No, I wouldn't say it's a famous sportsbook but saying they are not known by anyone here is not right, they have an ANN thread here since 4 years and other guys from this thread are also knowing them. It's one of the first decentralized sportsbook maybe the first one actually, you can bet there without opening an account if you want, directly from your wallet, without any way to lock your funds unlike traditional bookmakers, if you use this feature. I don't know if they are scamming OP here, but saying they are just impersonating "sportsbet.io" since 2018 is a little bit unfair IMO.