Why are the offers to buy Bitcoin on Bisq always way over the market price?
It's a combination of the low trade volume, and also because the traders on Bisq know that some people will pay a premium in order to avoid having to complete KYC requirements to do their trades.
If you signed up for an centralized exchange, you'll be able to buy at the market rate (minus a fee), but the trade-off is having to complete KYC requirements.