I totally feel you, I'm the same way. Luckily, I've found an abundance of people who are better than me at design in my area. I suggest looking for meetups/user groups, events, and conventions in your area if you are freelance or a consultant... Otherwise, if you work in an office, ask around.
I've attended a lot of different meetups in my area... Sometimes I have to drive an hour or more away, but it can be worth it. Sometimes it won't be but you win some you lose some. I also started a meetup for web development and we had a good turnout for a while; I was always surprised that we seemed to have more "front end types" and UX/UI ppl show up than total code nerds like myself.
You shouldn't have too hard of a time finding other front-end web devs/UI people because that area is BOOMING right now... Another good idea would be to locate a "coding bootcamp" in your area and go there and try and find people either by attending events or actually taking lessons there.
I noticed you're from Serbia so I'm sure there landscape may be a bit different than it is from here in California, but that's been my experience. If you cannot find anyone in person, try hanging in the FreeCodeCamp chats, forums, and look up a FCC group in your area. Good luck!