Currently, There are some Unexplored Niches in web3.

I made a list of some of them, and you should look into being the best in some of them.

1. Web3 Security.
2. Arbitrage
3. Web3 Forensic 
4. Web3 Agency (jobs and collabs)
5. Upcoming NFT projects

These niches here are poorly populated currently, and consistent threads on this niches can give you audience, attention & followers, can also position you for good jobs..To you, it takes some research to find information and build on any of the niche.

Good luck.