Mossey, in the broadest sense Christianity and Paganism are systems of thought that give form to the ineffable and I do see elements of similarity in them. Like you, I see a link between prayer and spells, these being ways of reaching out and connecting through words and ritual to a greater power.
But drawing such comparisons is anathema to mainstream Christians. And therein lies the problem for you. In most conventional churches, you will receive a frosty reception if you admit to being drawn towards Pagan ideas. As others have written, the Bible is condemnatory of witchcraft and most Christians will take their cue from that.
Personally, I suspect that the picture painted in the Bible is a distorted one. I imagine that witches were, for the most part, benign, trying, in what was a very uncertain and precarious world, to help and heal in primitive ways using herbs/natural products and rituals.
Given the view of orthodox Christianity, one possible way forward would be to investigate Unitarianism. While Christianity insists on there being one path to God, the path illuminated by Jesus, Unitarianism embraces religious pluralism. Unitarianism has its roots in Christianity but encourages an exploration of the ideas offered by other belief systems. There is actually a subgroup of Unitarians called the Unitarian Earth Spirit Network that describes itself as being
For those spiritual beings who find divinity in nature
unitarianearthspiritnetworkandfile.wordpress.com/the-unitarians/
Unfortunately, the group appears to be quite a small one so may only offer an opportunity for connecting if you live in a particular part of the country.
Nevertheless, Unitarianism in general does seem like a possibility if you have a Christian background but your beliefs don’t fit neatly into a particular religious package.
If you do go in that direction though, orthodox Christians will regard you as dodgy because they regard trinitarianism as absolutely central.