@Warpspeed1 here I did some poking around and I think this might help with finding a way to cover the other root canal you need. https://www.uslowcostdental.com/list/
@Warpspeed1 I do think that most dental offices offer a sliding payment scale. If you're in the low income bracket, I would recommend speaking to the office workers at the dental office to see if that's possible.
@Warpspeed1 As someone that was trained in the dental industry, I hope this helps. No one should have to suffer just because they can't pay for it.