Like I mentioned above, I use two different phone apps, my GPS and after comparing those I occasionally use a paper map and do something different than any of the electronic algorithms picked. I think the best algorithm has not been invented yet.

When I pick a route that Komoot or Maps.Me gave me, I manually (with paper and pen) pick a few road intersections that the route goes through, then I use my GPS routing to take me to those intersections. When on a bike tour I do not have the means to transfer a route from one device to the other.