Also, I have information about my Facebook and Instagram accounts saved on my laptop which contains list of users /people that I've blocked,

so would any malware or spyware contact all these blocked users and send them my personal information/videos/audio recordings/images/name/password to these people? To ruin my life and image? I basically saved a list of all the people I've blocked and also interacted with and friends on my laptop, so I'm afraid if the malware or spyware present on my other laptop would share my private information to these people.

I scanned my other laptop with 4 different anti virus scanners and they came clean but I'm still suspicious if that other laptop is infected since I didn't wipe/reinstall it and also since it's 7 years old. And is incredibly slow and stops booting

Or is this an unlikely scenario for malware that I randomly got from random websites that don't know me.