My 2c worth.
Firefox have recently comprehensively updated their browser security in regard to session cookies, so some sites may not behave the same way as Firefox now handles first / third party cookies differently.
https://blog.mozilla.org/security/2021/02/23/total-cookie-protection/But usually the issue with logging on / sites not working is caused by the browser cache.
It just needs cleaning out from time to time.
If have issue with Firefox/ CB+ in future, try this initially.
-If logged in anywhere, close those browser tabs down first.
-Click hamburger symbol at top right
-Choose Settings then Privacy and Security at left
-Scroll down to Cookies and Site data section, click clear data (make sure both boxes are ticked)
-Click Clear
or Click here to use Privacy shortcut url
https://support.mozilla.org/en-US/kb/clear-cookies-and-site-data-firefoxWaterfox (a fork of Firefox) - is now owned by a pay-per-click ad company called System1, who relies on data collection. So not sure to what extent they still do 'snooping' or not.
https://www.waterfox.net/blog/waterfox-has-joined-system1Vivaldi (based on Google's chromium engine)
https://vivaldi.com/privacy/browser/If you read through their Privacy Policy, I did find some they still do data collection and use unique IDs.
so if you are ok with this, can keep using browser. Although it does have less active development than Firefox.
"each installation profile is assigned a unique user ID that is stored on your computer. Vivaldi will send a message using HTTPS directly to our servers located in Iceland every 24 hours containing this ID, version, cpu architecture, screen resolution and time since last message. We anonymize the IP address of Vivaldi users by removing the last octet of the IP address from your Vivaldi client then we store the resolved approximate location after using a local geoip lookup. The purpose of this collection is to determine the total number of active users and their geographical distribution."Brave is also a good browser, based on Google's chromium engine, they are working on their own search engine too (since they acquired company Tailcat early last year)
Firefox has telemetry on by default as well.
Can turn it off via steps as shown here.
https://support.mozilla.org/en-US/kb/telemetry-clientidSo that sort of sums up a few of the browsers regarding privacy/snooping.
DuckDuckGo search engine replacement:
If not already setup as default search engine under Firefox.
-Click hamburger symbol at top right
-Choose Settings
-Choose Search on left
Under default search engine, switch it to DuckDuckGo.
Yes DuckDuckGo is great google replacement, instead of googling it - you can "quack it"