Which router/modem brand/ model supports auto wifi scheduler & real time data usage monitor and fiber connection?
Like it has to turn of at specific time ranges daily and then turn on automatically.
Plus real time data usage monitoring function.
Your fiber requirement is going to be the problem.
"home" routers which might have the scheduling you want, don't have fiber.
"small business" routers might have the fiber but not scheduling.
Real time data usage monitoring requires storage. Most routers don't have that.
You probably want to build a pfSense firewall/router to meet your requirements.