If you got money for a rental home, what about spending that money on new insulation for the house, specifically for noise? Maybe new windows too cuz I’ve heard that helps. Maybe an infrared camera to see where the cold air is coming in, cuz sound will be coming in too. Where is your bedroom? Maybe move it to the other side of the house? Could you go on a mission to build your bedroom into a fortress of solitude? If it’s big enough and you ok losing the floor space just build fucking a cinder block wall around the peremiter of your room, then drywall over it so it looks normal. Idk if cinder block would be best but you get the idea. Maybe hire a sound proofer expert to get ideas?

I’m very sorry you have to deal with the bells. Sleep is so vital and lack of sleep can genuinely be so destructive to your life and health. I hope you find a solution. I get not wanting to sell the house for a loss, but is it work your life and sleep?