Good post - as a matter of fact, we all suck. We're all trying to improve. The people that say these things don't care about your work and they never will.
A while back, I had received some critique on my manga on this forum and it was done in a VERY poor manner. I got big mad (not because I was insulted, it was just flat out rude) and went off, then deleted my post later and apologized. Someone else who had no skin in this review said to me "your art isn't good enough" while borderline trying to gaslight me by saying I needed to smack into the wall of reality. Like, I can't imagine being an artist and saying that to another artist.
To those people, I politely extend my middle finger, and carry on with my work with the biggest smile on my face
Keep up your work everyone, even the most seasoned writers and artists are still improving!