Comments on Quora and Reddit

I want to post 75 comments/month on Quora and 75 comments/month on reddit about a SaaS website service in an organic and human way not a bot behavior (The comments will include a link to the website or not? It's better if we can but not in a spammy way), I want the comments to be real and not to be blocked.
I need upvotes/likes on the comments in order to be shown at the top.
It will be a monthly task