OPK HELP!!!

So opk’s are making me crazy! I’ve never used them and don’t know if this is normal or how long I should be leaving them in the pee I like I think I’m losing it. I started taking them the day my period finished so that I do not miss it and so far there is no second line on any, not even a faint one to indicate that I have any LH at all, I’m meant to start my fertile window on Friday but still getting these results, can someone help or ease my mind? Am I doing it right? I usually just hold the stick in the cup until I see the dye reach the control and rest showing area then pull it out and lay it flat.

I use these cups

Today’s rest and the brand(has anyone else used these?)

The back, it’s not showing invalid signs just negative so still thinking I may have done it right but major doubts?!

Everyday the same deal(didn’t test yesterday as I stayed at my partners parents place and forgot my tests!!!)

Please help, I sound so dumb and confused but I’ve been trying for so long and finally taking all these extra steps(opk’s, feeling my CM, will be using preseed when I’m fertile) I just want this to happen so badly! Thank you in advance x