It seems I'm 0/2 with mixers recently and I'm down $500. Its a shame as these formerly reliable services have been replaced by sprawling scams. I think the only legit solution I'd try in the future is Wasabi Wallet's coin join and similar methodologies.
That's because you are using the wrong mixers. Yes, I am biased (my signature) but ChipMixer has mixed hundreds of BTCs at the same time without exit scamming and they spent literally millions on advertising here. This alone makes them more trusted than these random mixers that appear from time to time.