TMSL
T. Rowe Price Small-Mid Cap ETF
stockNYSEETF

Congrats on starting your investing jouirney at such a young age. You have the fantastic luxury of time for your money to work for you. You will find that there are many strategies out there and the ones you use will change as the market changes. Nothing stays the same in this game. Not sure what researching means to you. Researching investments involves looking up various ideas on their charts to see how they performed and running scans to see what is performing now. It's understanding what companies are included in ETFs. It's not just reading some Reddit and Discord posts to see what others are doing. You have decades to work with and a core of QQQM and VOO isn't bad but you should surround it with other things as your account grows, don't let it sit. Commodity funds (like USO for oil, WEAT for food) have been among the best this year, sector and industry funds like XLK and SMH, International and Emerging market funds like EFV and IEMG, and small and midcap funds like TMSL have all done better than VOO this year. Put these and other stocks and ETFs that you are looking at in a watchlist and keep track of them.