How do I remove this?

I was checking my phone's Chrome browser app, I was looking at the site settings and found a site called "s.0cf.io". Out of curiosity, I googled it and found this from https://howtoremove.guide:

"s.0cf.io is a browser-hijacking program that typically forces the system's main web browser to display advertisements, open new tabs and redirect users to sponsored pages. s.0cf.io can target commonly used web browsers such as Chrome, Firefox and Edge."

I don't remember installing anything from an unreliable source. But like what the post said about it displaying ads, I have suspicions that it's from an online selling app I downloaded from the Play Store because sometimes, ads about that app and the ITEMS I CHECKED ON THAT APP appeared in the ads on my Chrome browser app.

I have run scans on Malwarebytes and Avast but the two found nothing. Are viruses like this hard to detect or undetectable? If so, what program should I use to detect and remove it?

Please, I need your help, guys.

Tldr: I found a browser hijacker on my Chrome app's Site settings despite not downloading anything suspicious and AV scanners found nothing alarming. I want this removed and any help would be appreciated.