Cleaning up topology. where to start we this?

Topo 2
Topo 1
Whats the best approach to staighten out those arches?
Any recommended ways, plugins etc.
Cheers
A

On the right side yoy seem to have double as mutch edges as on the left and in the lower immage it seems to be that the inner ring also just use this half… So maybe ring select this doubled ring, delete edge loops… and repair.

Just started ring selecting, glad I’m going down the right path
Cheers
A