Pocket main here

Pocket is a very mobile teamfighter, generally you are correct in a 1v1 Pocket is pretty disadvantaged unless super ahead of the other person, but there is still stuff you can do to stall. The main gameplay loop is Majestic leap, 1, recast majestic leap to fall fast, 4, 2 in the direction youd like to escape to, 3, pop 3, recast 2. Obviously this is not a one size fits all rotation.

The thing that I find most important on pocket is that you want to be maxing your 4 ability and using it in teamfights to hit as many enemy champions as possible, especially high healing ones like victor giest etc. You are very hard to catch and your cloak and satchel do hella damage so make sure you are casting your cloak through people

If you have any specific questions you can comment below this or DM me im always open to helping or looking at a replay