The few readers you may have are important. Never forget that. It's better to have a few readers that actually care about your story than it is to have a bunch of subs that don't read it at all.
The most important thing to remember, though, is that if you're creating a comic or novel only in the hope that you get a bunch of readers you're doing it wrong. First off, you are very likely going to fail at that. When you post on a site like Tapas you are competing with tens of thousands of other creators. Some are better than you. Some are worse. And none of them matter.
Think of Tapas like a school of sardines. A school of sardines can contain tens of thousands of individual fish. There is nothing remarkable about any of these fish. They're just like every other fish in the school. Staying in that school helps keep an individual safe. It greatly reduces its chances of being singled out by a predator.

Your story is a sardine. So is mine. So is nearly every other story on this site. We are single sardines in a school, single grains of sand on a beach, single pieces of gravel in a driveway. The chances of being noticed or standing out are very slim.
But each individual sardine in that school matters to himself. He does not stop being a sardine because nobody notices him among the other sardines. He just continues on because he enjoys being a sardine. Similarly, you should continue your story because you like your story. If other sardines find it and like it too, that is just gravy. And if one of those sardines happens to be the right sardine you just may get lucky and become the next Heartstopper. But you might also win the lottery, and the chances of one are just about the same as the other. And remember, just like you can't win the lottery if you don't buy a ticket, nobody will ever see you if you don't put yourself out there!