Hey, thanks for answer!
I am European, so it’s not rare here. Currently I have no tools around whatsoever, not even a screwdriver. I bought the car real cheap so I could transport some stuff back to my home, which is 1600km(1000 miles) away, I just wanted to know if it can make this distance back to my home where I can figure out the problem myself or do I need immediate repairs. The engine itself runs smooth when not idling, there is no smoke coming out that might indicate it’s burning something, there is no loss of power. I think I have the same problem as this guy: https://www.youtube.com/watch?v=PQKmDQCkqRc
or maybe a vacuum leak. I also forgot to mention that the car screeches when I start it, which is probably alternator belt slipping, but maybe that has something to do with the idling also?