- adblocker or any other blocker
- DNS on browser
You should buy devices based on custom rom availability. mostly popular devices will have and maintained for many years.
search for your device in xda forums
i use this from years, it has links to proxy servers: unblockit. page
1.https does not mean more private. for regular browsing it does not matter 2. it is always good to have 2 browsers or use containers to seperate personal and regular stuff