The stuff is good, but you don't have a mouse?
and
The tablet that fits this keyboard is
Can you explain what it is?
You need to know how to buy a tablet~~^^

none

Rainbow Backlight Wireless Keyboard Cover For Galaxy Tab S7 S8 S9 11.0-inch S9 FE 10.9-inch (SM-T875 SM-T876B/SM-X700 SM-X706/SM-X710 SM-X716B/SM-X510 SM-X516B) Removable Magnetic With Pen Slot Keyboard Case

Love the Case Keyboard

شراء Rainbow Backlight Wireless Keyboard Cover For Galaxy Tab S7 S8 S9 11.0-inch S9 FE 10.9-inch (SM-T875 SM-T876B/SM-X700 SM-X706/SM-X710 SM-X716B/SM-X510 SM-X516B) Removable Magnetic With Pen Slot Keyboard Case