Concerns about Bisq2

Hello fellas,

recently I've been looking for a new platform to trade bitcoin. I came across Bisq1 and Bisq2. I've decided for Bisq2 since it appears to be more user friendly and hence I don't trade large amounts of Bitcoin Bisq1 seems unnecessarily complicated for my needs. Yet I have some security concerns about Bisq2. As far as I understood the whole security is based on reputation of someone. But even when someone has 5 Stars reputation he just can decide to fraud me one day. He will probably lose his reputation in that case but at the end of the day I won't get my money back, will I?
Isn't this security system a big security risk for end users? Perhaps I didn't quite understand it correctly. Any help would be very much appreciated.

Greetings