It's what I did before with Brave, but I have definitely switched to Opera as my default browser.
But in general my set up is permissive for primary cookies and not to allow third party cookies.
But every so often I use CCleaner to delete cookies. But with the exception of what I term "business" cookies, which I have listed in CCleaner.
This worked for me just fine with Brave, and with the addition of a few VPN exceptions seems to be going well with Opera so far.
Note that I do not rely on CCleaner for all clean up tasks.
But as long as I'm changing things around a lot right now, I'm interested in hearing about alternative ways to do this, in particular if there is an Opera compatible extension for very selective cookie culling.