Secure S24U while in youth hostel (notification or?)

My apologies if I'm in the wrong place, but I was wondering if there was some way to secure my smartphone while I'm sleeping in what I assume will be a common dorm or unlockedrooms, such as a loud notification when the phone is moved - ofc something that could be deactived once unlocked since it’s still something you'll constantly move around with - or any safety measures I could use ?

(Before someone asks, I could not get the Care+ for theft since I had it a monthly subscription which did not work for God knows what reason, and Samsung customer service refused to take it into their hands until it was too late, and now refuses to answer despite multiple reminder calls and 'we've received your demand' bs)