Fairies are not merely a creation for children. They are spirits simply.
European folklore is full of them, and they are not dainty little things with wings who grant wishes. They cannibalize each other, swap babies out with their own, shoot "elf-arrows" that drop people dead, and abduct people to take them to elphame for years and years. They may appear as animals, luminous beings, like people from the past, or strange small folk that have animalistic characteristics.
A good resource on their interactions with cunningfolk and witches is a scholarly book on familiar spirits.
Cunning Folk and Familiar Spirits: Shamanistic Visionary Traditions in Early Modern British Witchcraft and Magic - Emma Wilby
I myself worked with one, a familiar spirit named Grandmother Jaquabit. She was handed to me from Father Split-hoof (The black deviler) to instruct me. That was some time ago now though, and we've since departed ways.
She herself despised Christian symbols, and cold iron (iron beaten into shape).
Can't much say more than that on those experiences without breaking oath.
No Angels and Faries are very different,Angels work closer to God and Faries work more with nature
Well not all fairies are like that,there are some good natured and helpful ones however I think just like with any other entities,there are some good and some bad
no not at all. they are nature spirits. they do not wear armor or carry weapons, they are lovers and protectors of nature. trust me they are magical beings and need neither of those items.
I would never think of summoning the fey. I would meditate in the woods, or around trees, leave them an offering of bread or a small cup of milk. it might take a while. But if you are sincere, they will reply. You won't see them with your actual eyes but yr third eye. That has been my experience any way. Edian Mc Coy is a huge fey lover, i recommend anything buy her about the subject as well.
