OVULATION STRIP TESTS (help)

I’m so confused.. I have a 30/31 day cycle. I had a whole pack of ovulation tests so I decided this month I would start to track, i started tracking cycle day 10. And started to test maybe twice a day around cycle d 16. I got a nearly dark line around cycle day 14. Then faint afterwards on cycle day 15

All faints up until cycle day 19 again nearly dark but still a negative. Someone help. I’m so confused, would you count any of these as positives?

I’m abit useless at these sort of things need abit of help lol.

Thanks.