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

1. adblocker or any other blocker
2. DNS on browser

i use this from years, it has links to proxy servers: unblockit. page

• simple mobile tools - gallery, calendar and sms messenger are awesome
• quill note
• black hole
• aegis
• simple login
• syncthing
• tracker control
• aurora store

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