What am i doing (less) wrong?

[TattyJJ]

You can try lith prints. I use very old Agfa Brovira with good results. Here's one example:

https://www.flickr.com/photos/hekoru/28941861246/in/dateposted-public/

What kind of developer do you use?

 

[winger]

This is a good one to start with. http://shop.silverprint.co.uk/Moersch-Easylith-Lith-Developer-200ml/product/1023/1023/ There are others, but this is the one I've used.