As others noted, if it is not causing any problems, don’t worry about it.
We all innately believe that a 50/50 balance is optimal, but why? AFAIK, there are no studies indicating that. The reality is likely that we all have some imbalance.
Isolated legs drills won’t work…unless you are doing VERY long sessions. Doing ILD for 30-60” just won’t train your muscles for rides that last hours long. It may provide a mental realization of what the muscle activation feels like in the hips / glutes, but that is about it.