Hi, since you're pretty new you can find the map the easiest using the filter option of the game client.
You can filter via "Zuletzt gespielt" and other options in the Sort-Dropdown-Menu on the top right:
If you happen to remember which Rank you got and when you played the map approximately you should be able to find the map very fast this way.
As you can also see from my screenshot the more you play the less reliable is this method so you should utilize Collections to save the map in a place where you can find it.
To access collections just rightclick on a map and select "Manage Collections". You can create new collections and put your maps in them like that and use the collection filter later(it's in the "Group"-Dropdownmenu).
