Question about phone remote hacking or remote malware installation

Hello everyone, long story short, had a conversation and the topic of remote hacking or remote malware installation on phones came up.

Essentially, my question is if it’s possible. Can you get hacked or malware installed on your phone if you get close to someone else’s phone? Not necessarily have something physical plugged in (I assume this would do it).

I figured if it’s possible it’s very hard or complicated or else everyone would have this happen, still, I am curious.

I don’t know if this is the right subreddit. If it isn’t I apologize. Thank you.