I just bought a new PC, based on Lenovo Legion gaming desktop.
It comes with
2 USB port in the front, 4 regular USB port in the back + 1 USB-C port. That's a total of 7 USB slots.
It's been like 2 decades that every possible hardware device comes with an USB interface. Keyboard, mouse, joystick, hard-drive, memory stick, headset, webcam, spot/photo camera, and many others.
Of course it's my fault, I should have thought about USB connectors when shopping for a new PC and check before buying. but seriously, 7 USB slots is so few compared to all the device I have using USB
Exactly. USB is designed so that you can have multiple devices attached to one port. 7 slots on the PC is plenty.
And in fact, they probably already have a hub. I can't remember the last monitor that I bought that didn't have a couple USB ports on it. Put that thing to use. Webcam, USB headset/mic, keyboard and mouse can all run perfectly well off a monitor hub as can most other accessories. Save the direct ports on the mobo for things that need the bandwidth like storage devices.