I am almost in tears

I live in the plate and, well, drilling holes is virtually impossible. I also tried it unsuccessfully with steel nails. Also unsuccessful. But I had a nice art print, framed fresh, and definitely wanted to hang him. I also had a small photo I wanted to hang elsewhere. Both are well below the 1 kg maximum weight. And both fell down within 48 hours and went the glass broken. The power strips have loosed from the wall. Not recommendable.