Suggestions for a Booking Calendar for Daily Events (not Timeslots)

I run a Photobooth business for Weddings and Events. I would like an interface where I can login and view my active calendar, add/edit daily events and add things such as flares/badges so that I get a preview of certain things about that event without having to click into the date for more information. When I click onto the date I can have the full information about the event. This would NOT be for customers to use. Only myself and one of my employees with their own username/pw to VIEW the calendar. I would be the one adding in the information. I would want it to appear mobile-friendly as well as using multiple devices. So that the calendar would be nice and big on the phone screen for the daily boxes to be large enough to read the badges. Preferably a calendar that looks nice, large enough boxes for the dates when viewed on devices and is modern/clean looking. I have attached an image I asked ChatGPT to create that I could use for an example of my needs. It pretty much looks perfect to what I need. I'm not sure if I need a plugin/software that I can self host on my server that I have my hosting on, or another web based solution. Any suggestions are appreciated.