Hi there here are the basic controls of Apex Legends:
W - Move forward
S - Move backwards
A - Move left
D - Move right
Left shift - Sprint
Spacebar - Jump
Crouch (Toggle) - C
Crouch (Hold) - Left Ctrl
Tactical ability - Q (I suggest binding the tactical ability on Button called "Mouse 4")
Ultimate ability - Z
Interact/Pickup - E
Alternate Interact - X
Inventory - Tab
Map - M
Shoot - Mouse 1
Aim - Mouse 2
Melee -V (I Suggest binding the tactical ability on the Button called "Mouse 5")
Reload - R
Cycle weapon - Scroll up,Scroll down ( I suggest this Bind )
Holster weapons -3 (Hands which make you run faster)
Weapon 1 - 1
Weapon 2 -2
Weapon 3 - 3
Chose a grenade - G
Use heals- 4