There have been legal challenges to cell towers by a barrister in Australia. He has successfully stopped several towers and 5G projects. He uses a formula that he says can be applied worldwide in order to prevent harm from wireless radiation.
His name is Ray Broomhall. Here's an example:
https://www.5gexposed.com/2019/04/27/australia-barrister-ray-broomhall-pathway-to-protect-people-from-smart-meters-and-towers/The legal route he employs is that of assault. Wireless radiation is an assault on you and your body, and as assault is illegal, he has had telcos run away from courts, meetings, and 5G deployments.
I think it is very interesting the way he figured it out, and as I've listened to some of his lectures it appears he is working to create a template that could be used as a basis for this internationally.
Other than using lots of aluminium foil on your walls, maybe see if you can get somewhere with such an approach? He should have his own website with contact information and a lot of advice available, if I remember correctly.