Question about skyscrapers and demand

[Pepe The Great 227]

i have a question regarding skyscrapers. right now my region has approx 142k population, but i have 0 commercial skyscrapers, i only have a few skyscrapers for medium income residents and low income residents. and the $$$ commercial demand remains low for the entire region, some of my cities even have negative demand for $$$ commercial office and service. i also have sufficient schools in each city, all of them have access to high school, a couple have access to college. i don't have any demand mods install, i also don't have mods such as the "industrial revolution" or mods that increase high tech employment. do i have to play around with taxes? i saw some videos on YouTube some people get $$$ commercial office skyscrapers within an hour of starting their first city.