Same here. Literally thousands of forums and posts of people here pointing out the Brave Bookmark syncing is total s*it and the developers have apparently done nothing to fix it since it still persists.
After frequent attempts, my mac finally decided so sync across to my iPhone, except that it didn’t. It synced 2 random folders (of about 15) and then within those 2 folders it synced zero links inside them.
The brave sync feature says to “wait while your bookmarks are synced, this could take some time”. Well Brave, it’s been a month, is that long enough for you to sync literally 19kB of total data??
I’ll keep rockin Safari for now…because…it…actually…works.