Crack repairs?

Mar 16, 2017
Granada Hills
We need to have some structural cracks repaired on our pool. We have been getting mixed information on the best way to repair them. I'm concerned about spending all this money and then having the same issue again. No one will warranty crack repairs which concerns me on what's the best solution.

What do you think are the best ways to repair cracks?

Epoxy injection
Any other methods

Thanks in advance