Game of thrones- the big question.

Hi everyone, as promised, this is the first Game Of Thrones post to initiate the conversation.
Ok so my question is-what is up with the Lord Of Light in GoT?
In season 7 we are shown that the Lord of light tells the (other?) red woman to get Jon Snow to dragonstone, right? Upon which Danaerys summons Jon. Now think of this if Jon had never gotten to Danaerys, Danaerys would never have gone beyond the wall with her dragons and end up losing one of them.
If she'd never lose one, the dead wouldn't be able to march south.
Also the place where they lose the dragon, guess why did they end up there-trapped? Yep Lord of the light. Remember episode 1 (s7) when the hound sees that place in the flames? And leads everyone to the same place in the 6th episode.

So to sum up Lord of the light wanted the dragon to be captured and he wanted the dead to break the wall and march south. The irony.
What are your thoughts? What do you think?
Is Lord of the light evil? Or the dead can only be defeated IF they march south?
Do comment and follow for more such posts.