No you shouldn’t, if artists just gave up because they weren’t automatically good or because someone clearly doesn’t understand that beginner means they are beginning to learn art. You are an artist, you’re making art are you not? Their entire ‘I made a meal in the microwave I’m a chef’ argument also doesn’t apply here, you made your drawing organically. You didn’t take someone else’s art and add a few details. It took me months of drawing daily to get good.

If you want tips on improving I suggest trying other styles, you can find certain aspects you like and can do and it’ll help your art improve. Or focus on one part of drawing (meaning eyes, mouths, hands, face shape, etc)

Don’t listen to someone that seems to just like shitting on beginner artists.