Is it safer to go MgA or others?

MGA licenses are a little harder to get for operators, so generally speaking, a crummy casino won't want to bother with the monetary and regulatory commitments. That said, there are still some casinos that slip through and aren't great.

Still, I'd trust an MGA or UK license over something like Curacao.

Our jurisdictions page has info on a bunch of the most common ones. We rate Malta as a second tier regulator, which isn't bad and still about a million miles ahead of the third tier "rubber stamp" certificate printing jurisdictions like Curacao.

None of them are perfect though. The UKGC has managed to annoy just about everyone over the past few years and they were/are regarded as one of the best.

I've had issues in Curacao casinos and issues with MGA casinos so at the end of the day, just make sure you read about the casino before you deposit / read players' reviews and if you claim bonuses, read the terms carefully.

honestly, it doesn't matter in the end. because there are casinos that only hold a curacao license, but they are better and more trustworthy in all areas than casinos with mga licenses or whatever, and just the other way around
I spontaneously think of betssen (formerly betsensation) one of the best
casinos I have ever played at.
to be on the safe side i never recommend playing at casinos that are blacklisted on any casino review/rating site like casinolistings. a google search with the casino name + complaints often says so much more than a license. a few complains are pretty standard because there are always people which break the rules and then howl because they are denied payout. but with more than a few complaints... keep your hands off.

I have to say it depends. Best to trust the feedback of other players, read reviews and see if there are any red flags (bogus bonus terms, high limits etc.)