Hi Shaurya. I'm Greg, 10 years awarded Windows MVP, specializing in Installation, Performance, Troubleshooting and Activation, here to help you.
Please defines mouse "goes busy" - do you mean it becomes erratic or scrolls by itself? Explain more so I can find the fix for you.
For issue of mouse becoming erratic see here:
https://thegeekpage.com/cursor-starts-moving-ar...
https://www.pcmag.com/how-to/fix-a-jumpy-or-ina...
https://techcult.com/fix-cursor-jumps-or-moves-...
https://windowsreport.com/fix-erratic-mouse/ (Avoid ad links which intrude into editorial copy, especially avoid Restoro and Reimage ads)
https://answers.microsoft.com/en-us/surface/for...
ttps://appuals.com/mouse-moving-on-its-own-on-windows-10/ (Avoid ad links which intrude into editorial copy, especially avoid Restoro and Reimage ads)
https://www.youtube.com/watch?v=Z8L6q-Uxffg
https://www.youtube.com/watch?v=uBoYxiynN0A
For mouse involuntary scrolling see here:
https://thegeekpage.com/fix-mouse-is-automatica...
https://www.thewindowsclub.com/windows-10-mouse...
https://www.techwalla.com/articles/how-to-troub...
https://www.youtube.com/watch?v=W0sxyMnXnQI
Run the mouse troubleshooter at Settings > Update & Security > Troubleshoot. > Additional Troubleshooters.
Based on the results you post back I may have other suggestions if necessary.
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