Embarrassed But I Need Some Help Please Yikes-read & Run Me First Malware Removal Guide-

I turned 70 in August I am a disabled senior. I have some minor memory issues beginning. So I am embarrassed to admit I cannot find the
I know I have to do this first but I keep putting it into the search bar but can't find it.
Would someone be willing to put a link in the answer to take me there.

I downloaded and ran malwarebytes it came clean so it's somewhere else.

I will add more once I have run the tests.

Thank you in advance
Raven
I did not have a computer for a year and this is a reburnished one