Computer/IT Help Wanted (NE Bend)

Hello, I have two older Mac Computers.
I think they are around 2012s.
I had received these back from a business dispute and the operating systems were completely removed.
I am no longer able to access them through Icloud.
I am also wanting to know if they can be updated for business usage.
We mainly just need them for web browsing.
I am hoping someone can come to my office and go through each device individually.
Hoping to find someone that has the correct operating system to download to these computers.
I had previously went through someone named Chet (Anthony) from Prineville to help me with these services.
He charged me for these services and then disappeared.
I am hoping to not go through that process again and would like to find someone reliable, honest and trustworthy.
From what he did tell me, is that the operating systems needed to be downloaded to a thumb drive and then installed to the computers.
Thank you