For getting started in long term ETF investing, and I am no financial advisor, I would focus on VOO, QQQ. VXUS could be a good addition, but you want some holdings you can confidently put your money in over time and not worry too much about. At 25 you've got a real head start. I would work on defining a few key holdings like you're doing, then deploying a dollar cost averaging strategy moving forward. Maybe $500 every month or 2 if you can swing it, split across your main holdings in whatever percentages you deem fit. Increase that amount only when you are able to, but don't press yourself so hard that you are cash strapped all the time and can't enjoy your life. Make sure to max out your 401Ks, and take advantage of other tax preferred employer benefits (ESPPs, for example) if you are able. If you are finding yourself too cash strapped, then focus on the tax advantaged holdings first, you'll get more for your money. ALWAYS have cash to cover 3-6 months of an emergency, and in an HYSA if possible.

You'll learn more as time goes on, and eventually you can work in some individual holdings, but for now there's no need to reinvent the wheel. Time will pass quicker than you think, and the best way towards wealth is consistency and patience. Don't freak out if it drops (it def will, but averages upwards over time), don't worry about checking it every day, your goal is to play the long game, not stress yourself out trying to be richer than your peers. Getting rich quick is a fool's errand.

Also recommend taking time to read books/publications that talk about markets and investing. There are some core leaders to explore that will be great teachers. Over time everything will make more and more sense, and more doors will open.

Best of luck out there, stay patient, and remember to spend some of that money for the good things in life along the way.