Please help me!! Bolts are to hard to turn what will loosen them?

See:

https://www.askmehelpdesk.com/tools-power-equipment/removing-cutting-blade-202742.html#post974331

A breaker bar with a 6 point socket.

Wow!

I guess you used a small breaker bar. What I meant was a 1/2 drive about 2 foot long.

-or- An impact wrench. You could probably rent one.

I've heard of breaking sockets, but not a breaker bar.

Umm, what "bolts". I can't imagine any bolts too tight for a breaker bar. Which bolts?

I did say a "breaker bar" and not "break the bar".