Fighting with the bolt

The drill is spinning, hands are shaking, I'm drilling a hole in the bolt so I can put in a special bolt extraction tool inside (bought in Wurth shop). Bam!!! The drill bit breaks, so I'm taking another one and start drilling again.

Looks like the extraction bit holds ok, trying to extract it. Bam again!!! The bolt extraction bit also breaks :D Later I'm trying to insert a "torx" bit inside, hammering it a bit. After that I'm trying to extract it and once again it breaks. I'm tired with the drilling, my drill bits are blunt, let's hope the next day is better.