What machine are you using? What foot? What bobbin plate if there is more than one type on your machine? What brand and type of needles? Demin should be 110/18 - 130/21
The cheaper needles break with a higher frequency than the more expensive ones ime.
I break needles quite a lot - sewing thicker items like denim, webbing, leather etc
Not sure what needle is in at the moment but it's one of the ones I usually use. Thicker rather than a spindly little one.
I'll have another go at setting it up correctly