Go with sportsbet.io. Its reputation honestly isn't that bad. Trustpilot is the worst gauge of reputation that you can possibly use.

Or, you can simply hedge your bet if the game that you watch has live in-game betting. If you bet on outcome A then simply bet a proportional amount on all the other outcomes so that you are covered regardless of what transpires.

This strategy achieves the same effect as cashing out and sometimes could even give you better prices - worth a shot if you deem sportsbet.io to be unreputable and can't find any other alternatives.