Windows 10: cursor has a black bar that gets bigger or smaller when moving the cursor up or down. NOT A...

My cursor has a black bar underneath that gets bigger or smaller when moving the cursor up or down. This only happens if the cursor is custom. If the bar takes the whole screen, then the screen flashes different colors until you move the mouse. How do I fix this? Link: https://packaged-media.redd.it/i5knbpjcb7hb1/pb/m2-res_1080p.mp4?m=DASHPlaylist.mpd&v=1&e=1741050000&s=d0aaa0993245a07059526e35088c4cd3831d053a video is not mine, I have the problem on a Gateway computer

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space bar is moving the cursor above the line

space bar is moving the cursor above the line

 

Frequently opens search bar and cursor not moving at that time

I am using dell laptop. Sometimes ago Inspect frequently automatically opens while using any app or even google. Now inspect is not opening but search bar opens instead, and the cursor doesn't move in both cases. If I press another key, the cursor starts to move, but if I cancel the inspect or search bar, it opens again. If I use an external mouse, and if the search bar opens then i able to move cursor using mouse but i don't able move cursor using laptop's touchpad. And search bar is opens very frequently so i am not able to use laptop

 

Make cursor bigger without changing display scale?

You mention a custom cursor... IF you have "created" the cursor, you should be able to make just the cursor bigger. IF you haven't "created" the cursor, I would check at where ever you got the cursor, for a larger one.