Assistance on which class to follow

I really need help, I saw Camille van Neikerk video for one to know their vocal range and my range is F2 to F5( from chest to head voice) and in the I beginner's level it was entailed that a person with a high vocal range should join her class and a person with low vocal range should join Jonathan Estabrooks I don't know what to do because based on vocal range yes I should the class led by Camille van Neikerk but when I was learning to sing before this since I can't transcends voice any higher than F4 without straining myself but that's where in I'm trying to do mix which wasn't going so well by the way but if I am to sing an F4 with head voice it's really so simple for me. So what am I suppose to do?

Hi there, thank you for your question! I recommend following Jonathan Estabrooks's course. With a vocal range of F2-F5 and flipping to head voice at F4, I think you'll be most comfortable following along with his demonstrations and exercises.