I'm a bloke, so don't do "instructions". I assumed I could just fit it, but it beat me and in the end I had to watch the handy video that was linked via a QR code. This showed me what I was doing wrong and with a bit of brute force (it was tight), but a lot less ignorance, it was fitted.
My car is a Honda civic 2016 and it fitted well and has no squeaking etc that the previous "new" one had. You get what you pay for.