For me it's more what tools I don't use, I try to hide my dock. Have as few apps possible in my doc and block all distractions whenever I am pursuing deep work.
For focus, my best kept secret is tune in on brain fm, wait 15 minutes and you should be in the Zone. Not everyone likes music when they work tho..
I use the Pomodoro method in a productivity app (Centered)! I also like to practice getting into the flow state! Focusing on one thing at a time, blocking out notifications/distractions, and taking breaks have been really important to me during my work hours!