how should you react if you try to be nice to someone and they don't respond or acknowledge it

I always try to answer everyone because I think if you took the time to answer me I should reply back. I hope I've never missed a comment from you

Move on...I don't think the point of being nice is to get a compliment...

Nobody knows you personally online .To expect a nice reply just because you’re nice is overrated .Just move on

Just keep in mind not much that happens on the Internet really matters.