If you had 10000$ where would you invest it? I'm hoping for 10x in about 2 years
You can't hope for 10x in about 2 years. Cryptocurrency is volatile so the price fluctuates many times. So, better for you not to expect a lot from that. But, if the market goes up dramatically you can really hope for that.
how would you personally split that money? There are so many altcoins that I dont know which to pick, I remember the top 5 altcoins from years ago and now they are all gone, so should I only invest in BTC end ETH or others like NEO, ADA and EOS?
Just split it like this:
50% on BTC
20% on ETH
10% each on NEO, ADA, EOS
if you wanted those alts and trust them try that.