Dont rely 100% on airbnb, there are lots of other companies out there some work better than others depends on where you are, you have to give them a try see how they are working,
You can sync all the calendars using iCal but you still have to check I have had problems with VRBO a few weeks back they were showing I had no bookings when we are full till end of February,
For me booking.com always seems slow to sync, I do check everyday.
We are in Thailand and this year airbnb has been to number 1, we have not had any bookings from any other company I think that might be down to our calendar on airbnb showing full,
At the moment I only have one property on airbnb, we do own some pool villas that we did LTR because of the covid times, one of them is due to come vacant next month.
At the moment Im wondering what to do, stick to LTR or go back to STR,
I have also been looking at this company that will list your property on 30+ OTA sites, they do it all for you, they manage the calendars and send you the bookings I might just list one property on there and see how it works,