How do I use a bow and arrow in Minecraft on mobile?

I don't know how to shoot a bow and arrow while playing on my phone

Got the bow in hand and then hold it in the air

Press and hold on the screen. Then he pulls the arrow backwards and then let go when you want to shoot

When you have the bow and arrows, all you have to do is hold down your finger on the screen until the bow has built up the desired tension, then you can just let go of the screen to fire.

Thank you for the star!

but how do you load the arrow into the bow?