After college, my reddit was mostly used to keep up with product reviews (especially in terms of durability), tech news, and biomed research, and a lot of times I got guidance on hyperspecific issues from a lot of the professionals in those communities.
Also have to give a huge shoutout to r/resumes and the other large jobhunting subreddits-- I don't think I'd have found a job at all if it weren't for their megathreads and resources
I don't use Brave anymore but god, I remember really loving that bottom search bar layout (with the search icon rather than the whole bar). It was probably one of the hardest things for me to get used to not having when I switched to Firefox.