Help me find a children show which felt like a fever dream

sorry if my english is bad, not my first language. So when i was younger between the years of 2013-2017 there was a childrren show in turkish, which legit felt like a fever dream. I dont remember much just that it scared me shitless and i had a lot of nightmares. All i remember it was about a teenage girl there was an old man and a few other characters and a some weird creatures. in hindsight it couldve been just humans that got shrunk. <And the characters try to figure out a mystery and send these things to their universe again. I remember one episode waas about or better said in a labyrinth and they tried to find something like a key or something. I know it sounds very vague but every bit of information could be helpful