CMOS battery replacement

i just changed the  CMOS battery in my computer and it was very scary i was afraid that i would drop something on the motherboard and then that would do something very bad and then my pc wont turn on but actually it works fine now and i can boot normally

it was so annoying i had to boot into bios every time beforehand because it wasnt loading properly;;; but now it just died completely and i had to replace it

although this was an amazing excuse to skip on online school