$10K to spare, long term investment, but want to play it safe

Deposits are quite low-yield - especially where I live they don't exceed 3%. I am able to invest in international markets.

I am looking for something that will give me at least 6% assured return YoY.

General wisdom says VOO, but isn't it saturated already?

Horizon is 8+ years. I don't know the intricate world of bonds and dividends, so would really appreciate some decent name-drops based on which I can kickstart my learning.

Thanks in advance!