UserAgent: Mozilla/5.0 (X11; CrOS x86_64 9901.77.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.97 Safari/537.36

Steps to reproduce the problem:
1. trying to find security that works on chromebook
2. deleting cookies and cache
3. shutting down and starting over

What is the expected behavior?
no more crashes and stronger usable security that stays on chromebook and does not re-route to cell phones. do not have sync or bluetooth on...

What went wrong?
loss of security and faith in browsing

Did this work before? N/A 

Chrome version: 62.0.3202.97  Channel: stable
OS Version: 9901.77.0
Flash Version: 

help please. I need super friendly guidance. not in the least tech literate.