How does a polite and grateful person navigate the internet?

I care a lot about what other people think (not good) and if someone tries to help or helps me, I can't stay without saying thank you. I really want to thank people who comment on my posts. But many times I ask a lot of questions and I thus reply to a lot of comments and try to be polite and show how grateful I am. So, now, I have seen many people abandoning their posts after they get their answer without upvotes or replies or followups, I am pretty sure they are better at time management than I am. Now, what do you think?

What is the right way to behave when you post and random strangers help you? I know you all don't think about me all the time and if you made a comment you probably will forget about it, so is it ok to just upvote and forget even the people who help you? I have an exam in a few months and I should not be wasting my time rn, what would you do if you were in my place?

Don't say "dont' create posts" because I like the people here and the answers they give, but yeah, it's a hell of a job to reply "satisfactorily". Again, should I just "upvote and ignore"?

Also, I just want to say that people here are amazing. You guys are very helpful! Like, especially on c/linux! Such helpful communities are one of the things that make Linux great and more usable! Thank you to the folks at c/linux btw