LH-Ovulation prediction. NEED HELP!

I already ordered some LH strips on amazon but I’m really confused. Some people found digitalblue ovulation tests useful, some people said that they are rip-offs. I’m really confused. What do you use to predict your ovulation day? What brand of ovulation kit is the best?

Sorry... it’s not even my first month ttc. We are going to start trying next month. (We were not preventing too but I was following the app cycle as contraception.)