Set and forget as a college student

For the past year I’ve just been putting all of the extra money I have into buying VOO, keeping what I need to live life but I’m fortunately enough to have extra money laying around to invest, and I plan on continuing this but I was just wondering if it’s fine for me to keep buying VOO or should I look into other ETFs? Also I recently just learned about HYSAs and was curious as to why it’d be more beneficial to invest in VOO rather than keeping my money in a 5% HYSA.