How to isolate open applications, and ideally processes, in Ubuntu workspace?

I combine work and study, so I need a separate set of tabs for each task. For example: for work it is chrome with work-related tabs, vscode, obsidian.md and others, and for study - chrome, but with others, overleaf, pycharm, todoist etc. If you use built-in workspaces, the problem is that when you open the same application in one workspace, it opens a window of that application in another workspace, switching workspaces. I would like tabs to be separate, and ideally -- and processes, so that multiple instances of, for example, telegram, spotify, and similar applications can be opened. One way to do this is to have separate users, but when you switch between them, one or the other user instance goes into hibernation or shuts down. So my question is: how to isolate open applications or even processes, if it's possible, in Ubuntu workspace?