One can be any faith and have a love or interest in nature. The spirtual/ritual aspects of wicca never really appealled to me, though I tried to get into it when I was in my late teens and early twenties - back when the internet was young and it was almost impossible to meet other witches. I did manage, but they didn't exactly welcome you with open arms, not the serious ones, anyway. My biggest problem is that I had a hard time identifying with my christian upbringing - in believing in "God"....so it was a little ridiculous to go from not believing in god to having to suddenly believe in all these gods and goddesses. I felt that a lot of the wiccans I met weren't doing anything different, they had just replaced the christian god with the pagan gods. So in spite of the nature loving part of the religion, I just could not relate. Later I met pagans who felt the same way I do, but by then it was no longer important to me, and I don't care at all for what wicca has become the way some practice it today; I guess when you are younger, you really want a group to identify with....but now, I couldn't care less about that. I've settled into my own little thing, partly buddhist, mostly earth based, but still with a lot of the christian ideals I was raised on. If I were going to follow one religion exclusively, it would be buddhism.
There are a lot of great books out there on the pagan religions - libraries carry many today, and you can find tons at bookstores. If you go to sites like Witchvoxx, you can put in your zip code and find groups in your area, most of them are friendly and accept newcomers. I'd do some reading and reach out to your local pagan community, see what you can find. keep and open mind and take your time, there is so much to learn! Good luck on your journey!