I would advise you to search google for country specific eAIPs, where you can get charts for the “aerodromes” from.
You can download the charts for Dortmund from the German eAIP site.
https://ais.dfs.de/pilotservice/service/information/aip_online/aip_online.jsp
You can then see roughly what is expected of you, including what height you should be at what point.
You might not have noticed, but the arrival you selected is for RWY24 (ADEM2A 24) and you have an approach for RWY 06. You need to select an arrival that matches the approach (the ILS/RNAV etc.) … so both should be 06 or 24.
First of all, that is a little strange, as I have only two options, ADEM2A ALL and DOME2A ALL. I do not see any option for ADEM2A 24 … I am running v1.26.5.0
Are you on Xbox or PC?
What version of the sim are you running?
(If on a PC, ALT+ENTER and you’ll see the number in the title bar top right)
VOR/DME = angle to the beacon/distance from the beacon
(VHF Omnidirection Receiver/Distance Measuring Equipment)
Wikipedia is probably best to explain that, and RNAV.
There are two options apart from the above, the most simple is just to not use an arrival, just leave it on “direct” for your ILS approach
You could also choose an RNAV approach (but not “direct” arrival), that will give you a guide back out, round, and in again. As long as the ILS is on the correct setting in the MCDU, when you click the LS or APP buttons, it will land as an ILS landing.
Lastly, you might consider going “IFR high altitude” for that distance.
Low altitude flights tend to be for aircraft that cannot fly above FL180 (18,000ft)
The higher you fly, the faster your ground speed will be for the same airspeed.
I also forgot - you can check out “320 sim pilot” on YouTube, click videos then search for MCDU for lessons on how to plan things in there, you’ll need that if you go for the A32NX/Tollis/Fenix etc. - Or you can check my YT page