1. "Things I'm looking for in selecting an agent".
This evokes images the fruit stand at the corner of Sixth Avenue and 40th Street and picking out which three of three hundred bananas I want to buy.
At the query stage you're not selecting anything; you're querying. Or if you are unsure of what querying means, you're introducing your work to literary agents who will respond with their level of interest.
If there is a lot of interest, you might get requests for fulls, but you're still not selecting anything.
Only if you have offers from several different agents would you be selecting anything.
2. "I can't find your email address."
This one makes me reach for the pass key without even wondering what you're writing. My email address is both on two websites (New Leaf and my own) and listed in as many agent-tracker type websites as I know about, AND if you google "email Janet Reid" it's in the first item returned.
I'm willing to accept a low level of industry knowledge in new writers; just cause you don't how publishing works doesn't mean you can't learn.
But if you don't know how to solve problems, or at least TRY to solve problems on your own, then it's a big red flag. If the first thing you do is ask me how to deal with something, you're going to be a time suck. That's not encouraging.
3. Including a book trailer with your query.
For starters, you never include an attachment with a query unless the agent specifically requests you do so, and then, it's the pages you attach NOT a book trailer.
I have no problem with you futzing around and making a book trailer; I get that doing that kind of stuff is often a break from writing that you need. Just don't send it to me. A book trailer is a publicity tool. You're not publicizing your book right now. You're querying. If you don't know the difference, that's a problem.
4. Listing the genre as "fun" or "adventure" or "dating"
Do I need to explain why?
5. I'd like to pique your interest, so here's my bio.
Unless you are Idris Elba shopping for a new wife, you aren't the first thing I want to hear about. And people who think their lives are interesting are generally wrong. Have you noticed that?