So what is the solution, and still keep football football?
some things could be done: eliminate the three point stance on both lines of scrimmage, forcing blockers and tacklers to collide with their heads up, looking at each other; any attempted tackle above the waist should be made illegal, forcing tacklers to aim for the thighs, and wrap up the legs; reduce the passing game in the middle of the field, which is where receivers are the most defenseless...there are a lot of things which could make the game safer...
personally, I’d rather see flag football; wide open play all the time without the savage mayhem, though of course, as in all sports, there would still be mishaps...