We have the EXACT same house and set up. Except we aren't detached from the house on the left as per your pic. All three houses are joined.
My partner is friends with the guy next door (the terrace at the end on the right as per your pic) and yet he does the exact same as in your case - in addition, his gf has horrid, feral kids who run and up and down our path every time they're here, kick footballs, etc. We have asked them to stop and they state that the kids have autism and ADHD and "can't help it" and just keep on doing it. Some people are inherently selfish and DGAF. You have those as neighbours, unfortunately for you, and so do I.
One of my neighbours' car spaces is outside his living room window as per your pic, yet he feels the need to drive right up to where the alley is in your pic, and reverses onto his space so he passes our living room window. Multiples times a day as he doesn't work and is in and out all day. He's already dislodged a brick.
Another neighbour tried plants for her similar issue, and they were destroyed and crashed into.
I really don't have an answer as I've been here a few years with the exact same issue and am yet to remedy it with anything which works. People have no manners these days and I totally understand and sympathise with you. Yes it DOES affect you when it's ALL the time, and no it is not petty to be upset by it!
I wish you were my neighbour. You have manners and understand boundaries.