I have discovered over the many months know using Brave that it does not display websites properly, nor does it allow for some functions to work properly, such as in financial institutions, even if it gets to the website and shows the site.
Thus, I have to switch back to Google to meet many of my needs, and then back to Brave. I wish there was no need to switch back and forth.
Depends on the site, some sites have issues with us blocking their trackers or block the 3rd-party cookies. But having a sample site(s) I can investigate.