Simple Hotbar Swapper is a client only mod, that allows the player to swap items fast from the inventory to the hotbar.
There are 4 key bind options available right now.
-swap 9 items (forward and backward) (ALT and Z)
-swap only the selected 1 item (forward and backward) (V and B)
Key bindings can be changed in the Options->Control->Key binds...
PS:
If possible, use a mod additionally that lets you have more key binding options like Amecs
Mod Currently Supports
Forge 1.21.5 | 1.21.1 | 1.20.1
Fabric 1.21.5 | 1.21.1 | 1.20.1