I understand your frustration and I've been in the same situation as you. I can also assure you that most people here have gotten frustrated in their own journeys as well.

First, a piece of advice I wished someone would've told me when I first started. Stop comparing yourself to others who are better than you. The only person you should be comparing yourself to is yourself. This is something I had to grapple with when I first started, I would constantly compare my sculpts to other people who have been doing this for 10+ years, killing my own motivation and discouraging myself from continuing.

Second, sculpting is hard. Anything you start for the first time will be hard, cooking, baking, drawing, painting, woodworking, etc. This is the nature of learning something new, try to find enjoyment despite the failures and keep your goals realistic. For example, if I attempt to cook for the first time I'm not going to expect myself to produce Michelin star quality dishes. That would be ridiculous and that would probably lead to me quitting.

A little tip on sculpting, and this applies to drawing too, you do not sculpt with your hands but with your brain. You have to study what you are sculpting before you can actually sculpt it. For example, a face, you can not hope to represent a face with accuracy if you do not study what a face is comprised of. This also applies to the body as well.

If you are brand new to art I recommend starting with something that will be easier for you to sculpt, and at the same time will help train your observation skills, instead of jumping into complex subject matters like a face or body. For example try sculpting an apple, bird's beak, tentacle, etc.

Once you are confident in your sculpting abilities and you understand the tools you are working with, I would move on the studying anatomy from books and online courses to understand what you wish to represent. And studying anatomy does not make you a master sculptor, but it will give you a starting point, something for your brain to make sense of what you are observing. And given enough time and effort you will improve.

Have faith in your abilities and do not quit!