If someone on YouTube claims they installed Symbian on a Galaxy S23, it’s either clickbait, a theme, or a very limited proof-of-concept running inside a Linux chroot with no hardware support.
Short answer: Not in the way you’re thinking. install symbian os on android phone
Happy retro-ing! 👾 P.S. – If you just want the pre-iPhone UI feel, look up “ZLauncher” or “Old School Phone” themes. Much less painful. If someone on YouTube claims they installed Symbian