Sweetheart, you are not alone. I am with you 
We moved out of our old flat due to endless noise problems with lovely but, unfortunately, ageing and increasingly deaf neighbours. They were very nice but the opera they played so loud I couldn't hear my own music wasn't.
In my new house we don't hear the neighbours at all. Bliss. BUT we live overlooking a car park which at night acts as the start/finish line for a load of boy racers who like to whizz around the village like twats in their souped-up dickmobiles. There is another group who I suspect work in the nearby restaurants and like to play football in the carpark after their shifts. Unfortunately their shifts end between midnight and two a.m. 
At first this sent me into a huge stress spiral, I think because we'd already had all those problems in the old flat. But I love this house and don't want to move. So now I've dealt with it by separating the 'types' of noise. If it's a group walking past, or they're gone by midnight, I try not to bother. But if it's after midnight and they're evidently settled in, I call the police. Every time. And they come and move them along. Every time.
I have found that having a set plan of action has really helped as it makes me less panicky. I also got a fan which I put on when it's bad, and it totally drowns them out. I can sleep with it on and it doesn't drive the leccy bill up massively, which I thought it would! You could also try a white noise app on your phone. I don't use earplugs as I have tinnitus, but do try them, they can really help. You can also put up curtains with blackout material if your landlord is okay with it, which does really help.
I doubt the landlord, council, police or anyone else will really be able to help with 'transitory' noise, i.e. people walking down the street. But if they set up in one spot and don't shift for half an hour, then call 101. That's what they're there for. I totally understand the ragey feeling! It's so intrusive and you can't help but feel like they're doing it on purpose. Plus, once you're aware of it it's so much worse - even when there isn't any noise, you're dreading that there might be!
I hope some of the advice here helps at least a little bit. 