Surebets also call arbitage bets. For example, you place 2 bets with odds 2.05 for 2 participants of the game.

Be aware of 1xbet and its clones. It is the most scam famous bookmaker in the world. Be aware of russian, greek and turkish bookmakers.

Yeah, Ladbrokes is a good bookie (unfortunately I can't play there). But their email means that [for example] your IP someone uses/used with "not allowed" bets like valuebets or surebets.

But why you picked Ladbrokes but not Pinnacle or Bet365 or Betfair?

"You can only withdraw via the means you deposited." - Every bookmaker has this AML rule.

"Hate anything KYC" - Every reputable bookmaker asks documents because of AML. And every like-scam bookmaker asks documents with intention to steal your money. As I know, bitcoin bookmakers don't ask documents. But there were some cases when Cloudbet and Anonibet requested documents.