this is not a malware problem or anything you did your computer was hacked,the people were typing then disabled your trackpad I would contact your provider to see what they can do to give you control back over your OWN laptop not have some dicks controlling it im sorry but I can’t do much for you good luck.
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so sounds like you got hacked/ have a virus so what that is when you surf the web and click on some ad sometimes it downloads something that gives the people who made the program control over your computer you can try to get in and run a virus scan(ONLY TRUSTED ONES NOT SOME RANDOM YOU SEE ON THE INTERNET)and get rid of it but can't do much if it types random things if that does not work you can factory reset(you will lose all pics apps etc) or contact your provider.
this is not a malware problem or anything you did your computer was hacked, the people were typing then disabled your trackpad I would contact your provider to see what they can do to give you control back over your OWN laptop not have some dicks controlling it im sorry but I can’t do much for you good luck.