Confused at what screwdrivers to buy to dissassemble my HP laptop. Advice would be welcome!

I have a 'hp envy 13-ah0501na' that I want to dissassemble, and jut fix something that is out of place.
I need to take the back cover off.

From watching a 'removing and replacing parts' video for a similar model, I understand I need to buy a T5 screwdriver (for the 4mm screws) and a P1 Phillips (I'm sure I only need it for the top 6mm screws and not the bottom 3mm, as the button section has tape under the 'rubber feet')

Little confused on the P1 Phillips. I cant find a P1 Phillips for 6mm screws.
OR, I think some screwdrivers I have at home removed the right side 6mm screws, but the left side just keep twisting and twisting, and dont come out. What do I do?

Thank you!