@linda-wouters hi Linda, greetings from the Eifel from a Dutch guy
If you are looking for nice routes in Germany you are on the right spot. I will try to transfer this week some of my German routes from Basecamp to MRA, so follow the Eifel and Schwarzwald.
For your own routes, consider that more is less, but less is not always better
That means, if you delete a shapingpoint and the route doesn't chance, you can delete it. Look in your device how many via- and shapingpoints are "allowed". But most of the time you won't exceed the device's maximum.
If you have 2 different devices (Garmin and TomTom) it is more important that your points are exactly on the roads of these maps. MRA (Gold) can help you with this issue when you compare the route in the 2 different maps. In the toolkit select compare with and than select the other map. You can now equalize the routes by adding extra shapingpoints. In this example you see that you, with your Garmin, would make another tour than your son, with his TomTom. You would miss each other for several minutes and curves