I don’t get the concept of “Focus Time” in your calendar.
I.e., signalling to everyone that this is when I’ll do work because that implies that the rest of the time that I am not working.
Meetings have value when done right.
Calls have value when done right.
Standups have value when done right.
Work has value when done right.
The goal is to figure out how to stay focused and deliver.
Move your meetings around.
Select which ones you are going to.
Drop the non-value activities.
Your calendar can be lightweight but have plenty of focus time.