Looking for Investment – Thoughts on MSCI World ETFs

Hi, I am new to investing and looking for a way to invest an amount of 20K.

Idea is for 10-20 years (possibly selling something in between on a bull run) and compounding over the years.

I consider buying the ETFs

MSCI World Materials
MSCI World Health
MSCI World Energy
S&P500
NASDAQ

There are so many ETFs that it is hard to find the right one as a beginner.