I hate when websites collect data about me, and there are some websites that FORCE me to accept their cookies, so is there any way to clear cookies and site data when I quit Brave except for sites I logged in?
brave://settings/clearBrowserData and on exit tab clear whatever you like
you can also go to
brave://settings/cookies and clear cache and cookies on exit
Do as @justsomeone1 told you and also in the cookie settings allow to save cookies to the sites you want to kept logged in