Since my country does not participate in Eurovision, I will state the three songs that I dislike the most from the country where I started watching eurovision.
1. 1975 - Sommer Melodie, this is a big fat NO from me, thank god it came last, this is the most awful thing Germany has ever sent, it is literally worse than Paradies wo bist du, and we are still getting to that. I don't like this duet thing they were going for, it feels super forced and the back up singers more charisma than the two main singers. Also, what are they wearing. Their outfits are terrible, it is just mind boggling what a colossal failure this entry is.
2. 1965? (I think) - Paradies wo bist du (I think it's called that), This was also a deserved last place and Zero pointer, just the song was so boring even for back then's standards. Great singer, but the composition was definitely not helping her out. Nothing else to say about it, just not competitive on any level, and quite difficult to listen to.
3. 2005 - Run and Hide, I don't think I need to do much explaining on this one, just watch the performance.
Besides that, I actually enjoy most of Germany's entries, maybe they had some misses in the last decade but overall, they provided some great quality over the years.