so this whole recording thing is not for nothing?
The biggest thing is to be confident in your own ability & never sound defeated.
i think you should post links to your music on soundcloud & youtube. Sometimes you might get someone interested.
If it's just for fun , look for accappellas & learn how to sync & pitch them. Try various web sites.
If you can't find any vocals for free, make a dub album.
Save up for a song, i'm sure many people here could hook you up with the singer of your choice.
It might cost a few hundred euros but at least you would be happy with the outcome.
Last but not least don't give up with your own voice just yet, keep singing & learning.
All the best.