As you grow, your research/mind grows gradually. The main game is to narrow down your research as much as possible.
From one website to other but only after specifying keywords you want to research on & further narrow down to use-cases.
Keep yourself 24/7 updated to whats going on in market.
1: get involved in communities on twitter/linkedin/slack/discord. 2: go & find bad reviews of products on internet/app stores, etc. 3: search on startup directories that whats launching in world. 4: go to ad libraries & see whats selling/what ads are put out in market. & a lot more accordingly