What has this to do with being the aggressor?
I'm saying "no war without war crimes". And every country commits them. Look at WW2. The USA also commited war crimes.
You're basically saying that humans are not equal, like humans under autocrats are genetically built different to automatically commit war crimes.
Since you're asking for Ukraine war crimes specifically:
- Torture incident
- Care house attack without evacuating patients
- Captive Soldiers killed at close range
- Deliberately endangering civilians
Note that independently investigating war crimes while the war is still ongoing is very difficult. Most incidents usually surface after the war.
Germany is not coming back. The pension system, exodus of academics and high taxes on top of all of that will make it even worse in the near future.