New iPhone battery drains when turned off

I reinstalled all my old phone stuff to make the 13 mini like it was this morning before the factory reset. I have turned it on and off leaving it for different time periods. It now doesn't have the problem. For some reason turning it off leaving it for 10-30 minutes about 10 times has fixed the problem. The factory reset did nothing nor did the battery life hacks. Just turning it on and off seams to have fixed it.

I will leave this up so if anyone has the same problem they can see what I did.

Hi. The phone was at 87%. I turned it off for 10 minutes. When I turned it back on it had gone down to 83%. This would suggest the boot up is draining the battery.

Does this mean the battery is toast?

Ok. I did a factory reset. I only put my apple ID on the phone. I did all the phone hacks for the battery then turned it off. I left it for 20 minutes. When I turned it back on it had gone down to 79% from 82%.

This doesn't seam normal. Somebody help.

NOT SOLVED.......

Charged it yesterday to 100%. It stayed like that for the rest of the day until I turned it off. Turned it on this morning. 5% drain.....

HELP.

Thanks. I will look into sorting it out.

Thanks.