Figure out what you have to get done first. Try the basic stuff and don’t add anything until you have to. I’ve been using Macs since the original 128K Mac and I have to confess that I still don’t use Alfred, or Keyboard Maestro.
Now I do use Hazel, and am expanding that. And I tend to pick the more complex packages for the other tasks I use so I use DEVONThink, Scrivener, Omnifocus, LightRoom Desktop, Photoshop, Carbon Copy Cloner, Aeon Timeline, 1Password Standalone version and LibreOffice.
We are a no Microsoft house entirely here. But I’ve found so many issues with sharing Pages, Numbers and Keynote with others that I’d go instead with LibreOffice. Free and still allows you to open and save in MS Office formats if required.
Get used to the new system and your uses and then pick software if you need to for additional or expanded uses.
As @Topre says, most Mac software comes with a free trial so when you run off the end or have a need, try several options to see what fits for you.