I find it helpful to consider gps routing for a bike as two separate steps.
The first step is route planning.
The second step is route following.
As regards the planning there are various tools - strava, ridewithgps, komoot etc. Personally, I prefer https://cycle.travel/map
. It really is a matter of figuring out which planner will work best for your preferences. It may mean playing about with different settings etc.
The planning part of the Wahoo is pretty poor - I rarely use it and only in emergency.
I think you need to look at what you are using to plan your route.