I have a better idea, for Dexes, use another Wallet, not your main wallet, that way even if you unlock it with your private key, there is no harm stealing your major cryptos which are in your main wallet that is not linked to Dexes.
That's what i do, i also stick to famous Dexes only, any exchanges that i don't know i don't even bother trading in, as simple as that.
This is the one that I am using, I have been hacked once and it really sucks. Now I have learned my lessons and never to go back to being an ignorant trader again. OP is right, there are new DEX that are popping, I do love to trade there because aside from KYC free, the experience is limitless.