

I bought a physical mouse for my Tab A9+ tablet and it wouldn't connect even with an adapter.
I got a tablet a while ago and decided to put a case with a magnetic Bluetooth keyboard on it, however, I find it uncomfortable to use the trackpad, which made me buy a physical mouse from Temu (because I wanted a cute pink one) and an adapter, which when it arrived I realized didn't fit in any port.
Today I bought a new adapter that actually fits the keyboard, but when I plug the mouse into it, no red light comes on and the cursor don't appears on my tablet, only the trackpad works. I've already searched for solutions on Reddit and websites, but nothing has worked. My aunt and grandmother even tried to help me when they saw I was upset, saying I should try charging it (I'm trying to do that now, but it still doesn't seem to be working) and even put in batteries (even without a battery compartment).
Anyway, can anyone help me?
(first image is how it looks when connected in the adapter, second one is how it was supposed to look when connected)