To get from A to B in Europe, I use Komoot… way, way better than Google maps.
GM is better for finding specific places in a city, imo
For route creation have you tried Brouter? It's more customizable than Komoot. For example you can input a custom algorithm setting for distance vs climbing and find your own balance.
By the way I think the default Brouter map theme has excellent separation between major and minor roads. It's very easy to read. Not taking about color aesthetic taste which varies by person, talking about the information clarity.
https://brouter.de/brouter-web/