Get a cheap new phone number? Your potential employer will find out your identity eventually when you start working there no? What's the issue with having to use ID to get a new line? You put a fake name on your resume?
There's things like taking privacy too far you know :)
I'll never understand the people that have their photo archive linked to a chat app.
Where I live, line is the de facto standard. Soooo many people don't use any backup and just count on line to manage their pictures. Some dude went viral for losing 10years worth of family pictures when he went from iPhone to android. Line is a shit all that doesn't do any migration past 14days when changing os.
Just use Google photos and never think about it again? Or use self hosted stuff if you don't like the cloud. But for the love of God, don't count on the chat app...