I think the key here is to be confident in your brand and professionality. I've noticed that the more confident I've acted, the more people have trusted in the value of my content before even seeing it.
Do not give in to their prejudice, don't waver, don't lose your faith in your work.
Comics and art are valuable things and require a lot of skill, effort, practice and money for YEARS UPON YEARS in order to do in a successful manner. Have pride in what you've acheived because it's way more than what most people can even get close to making.
Don't be shy about the things you've made. It may feel like bragging, but if you've finished a certain amount of stories or chapters, don't be afraid to make that clear if they start doubting you. If they start the "it doesn't make money" or "noone cares about comics anymore" bullcrap, just refer to the comic artists that make $9k a month on patreon.
The main reason artists and comic creators aren't respected more is out of cultural ignorance.
