something I saw on hacker news that may be of interest here. JavaScript library that lets you add multiplayer cursors like on the nekoweb homepage - https://oxism.com/trystero/
a short tutorial on how to use "meta name=viewport", because you can use it to easily get your website working decently on mobile: https://dabric.xyz/post/meta-viewport/
(heavy tf2 voice) you. take time. do not rush these things