Hello, I'm not an expert and I may be wrong, but it looks like they exploded due to overheating. I had bad luck with multiple bulbs as well, they kept burning. So I decided it was time for a change, and I bought a little more expensive LED bulb and to my surprise, they came with coolers (little fans) built-in. They are brighter and haven't burned yet like the old halogen ones. If you are interested here is the link to buy them on Amazon:
https://a.co/d/92flvkO