Sorry I’m late to this. You have a lot to be getting on with it I would love to help with your next draft.
Happy to send you my own via dm if that’s any help, although I’m no expert however I’ve had a lot of help with mine.
Take a look at other peoples to see what is expected of you.
I suggest you look at query shark.
How To Write Query Letters ... or, really, how to revise query letters so they actually work
queryshark.blogspot.com
There is a group on Facebook called ‘queries, synopsis etc.’ which is useful for reading other authors queries and seeing the comments.
There is another key one I used but my mind has gone blank. If I remember fit I’ll pop back and add it to this thread.
Good luck-you’ve got this!