Buying silver and gold worth it? I already have multiple stock accounts I contribute to monthly. Looking to diversify

I currently invest roughly $800 a month into my military TSP account. I then have a personal Roth account that I contribute $200 a month if not more sometimes a month. Then I have a brokerage account that I contribute to occasionally. I’m wanting to get into buying physical silver and gold to have my money in multiple investments. New to this silver and gold game. Any recommendations or tips? Thanks!