Value/Growth Investing

So im a medical resident with 2 years left and been investing in VOO since college. I have about 15k in it and plan to invest 3-4k a month of my monthly income once I finish residency until retirement. My main priorrity after finishing residency will be to aggresively pay off student loans.

I know this may be frowned upon here but I also set aside some money as "fun money." Stuff to invest in like up and coming stocks, swing trading forex. Money I am 100% comfortable losing.

At the same time, I don't want to just gamble. For the "fun money," what's the smartest way to go about it? I did an MBA and my favorite part was economics and accounting! I loved going through cash flows/balance statements and analyzing stocks. We did a stock simulator class and it was amazing.

My main question is that with my "fun money," is it a good idea to go invest in healthcare stocks/AI stocks that potentially are growth or value stocks? I won't have the actual capital for a few years but if it is something worth my time, I want to spend my spare time learning fundamental analysis since it's enjoyable to me anyway.

I went down the Forex day trading rabbit hole but It seems more like gambling to me than proven methods