Unfortunately, the carbon fiber repairs have been known to fail.
Why carbon fiber strips on basement walls is bad - Misc. Discussion - InterNACHI®️ Forum
Chances are a repair to one wall won’t cause damage to other walls as the forces that are causing the walls to bow are applied to the outside of the walls. It could be anything from water to the composition of the soils.
It’s practically impossible for anyone to diagnose your problem without seeing it. As I stated earlier, you need a qualified foundation contractor to assess and make correct repairs, the key word being qualified. Do due diligence when looking for a qualified contractor.
If you own the home outright, and you really like the house, it may be economically feasible for you to have the walls properly repaired, but as stated above, only you can make that decision.