I follow the same process every time with the Libre 2 sensors. They last for 14 days for about 70% of the time. The ones that last the full length of time are still stuck very firmly when I come to take them off.
In the very hot weather last year I lost 2 in 2 days (they just fell off). Sometimes I dislodge them on a door frame, if I lose my balance. I've lost a couple while gardening - they weren't knocked off so I assume the physical activity made me overheat. I'm post-menopausal and still overheat quite regularly.
We all have different chemistry, different skin types, different body heat, different hormones etc. Just because it works 100% for some people doesn't mean it will work 100% for others, so don't beat yourself up or feel that you're doing something wrong, even if others pile in to say that it works well for them.
I hate having to self-fund but these are an absolute necessity to me due to hypos that are unrelated to diabetes (ie pre-date T2D by 40 years). They're "prescribed" to me, ie my consultant wants me to use them, but the NHS won't fund them. So it's reassuring to know that Abbott have a no-quibble replacement policy.
Good luck, and don't be made to feel like a freak just because others say they don't have the same problem.