Hi @CaitlinG99 The side key settings explained here https://gadgetguideonline.com/s22/use-customize-the-side-key-on-galaxy-s22/
choice of standard ( 60 Hz) or Adaptive Refresh Rate(10-120) on Ultra and resolution can be displayed in HD+FHD+ and WQHD +. Some detail here https://www.pocket-lint.com/phones/news/samsung/160161-samsung-galaxy-s22-tips-tricks-plus-ultra-hac... Go to Settings-Display for light and Dark Modes https://www.androidheadlines.com/how-to-turn-on-dark-mode-galaxy-s22
obviously can watch videos too and if suitable visit an experience store as others have described.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .