A few years ago I was riding my bike at night and my gear cable to the back gears popped out of place. I couldn't see so I just wrapped it up and forgot about it. This spring I tried fixing it but I just ended up making it worse so I decided to take both of the gear cables out.
It's kind of hard to pedal(I can still ride fine but it would be nicer if it was easier) and I noticed the higher the gear I have it in, the easier it is to pedal. However it only stays in the second to smallest gear and every time I try moving it, it just goes back to that gear.
I'm no expert at fixing bikes so if you need more info I'll try my best to explain.
Also if I could get the chain to stay in place without taking it to the shop that would be wonderful(That's the absolute last resort)