iPhone 12 mini battery drain in insane!

So yesterday i did charge my iPhone 12 mini 3 times! I have used my phone for 1,5 hours the last 24 hours and when i went to sleep last night i had 80% battery, woke up this morning to around 10%. I don´t have 5G in my location and there should be no reason why the battery is draining so fast. I have had my iphone for around 14 days with no problem, so what is going on?