hyprland has this, but you have to configure it. It’s called Submaps. Some other tiling window managers/compositors (notion for example) have it too, but not to that extent. (notion can be enhanced by Lua scripting, tho.)
The idea is, after the first key of the sequence the meaning of a set of keys change. You could configure those to change the meanings again etc until you finally reach whatever depth you wanted and it performs an action.
However, be warned that hyprland is currently developed by very elitist people who like to support onky a very small set of distributions (primarily Arch btw) and have not much interest in other peoples Ubuntu shenanigens and the likes. It is extremely hard to install in Ubuntu and similar, requiring you to do minor edits to build scripts and source code in multiple languages and finding required library versions from build errors that do not mention them.