Not OP, but open the uBlock Origin Dashboard and put them in the section for rules.

uBlock Origin is not the same as uBlock. I prefer Origin.

How to open the Dashboard https://github.com/gorhill/uBlock/wiki/Dashboard

You can create rules to hide something by right-clicking on the page and choosing 'Block an element', or by adding a rule like justwatch.com##.consent-banner in your filter parameters.