Should I just wear everything when flying without luggage? Will that cause problems at security?

Hi, I'm thinking about booking a cheap flight with Condor for the winter. However, it only includes a small bag/bag measuring 30x40x10cm. Extra baggage is quite expensive, and I don't really need it. And I'm kind of tempted to give it a try. In the permitted bag, hygiene products would then be put, and a…