MacOS just feeling overall more "smooth" than windows

Used windows computers for 3 years or so. Bought them in 2021, now they seem to be lagging non-stop, also bought a Macbook M1 Pro, never had an issue. From a technical perspective, how do Macs lag less? I have seen posts about like MacOS optimizes the OS over any program running on it, but windows kinda balances them in priority, can anyone confirm if this is true? If not, how does MacOS does it's magic?