I'm a little surprised no one else has mentioned this yet, but if your agent is in compliance with the new rules, they would have had you sign a buyer-broker agreement before showing the house, and I pray before starting negotiations for you. That could mean that if you were to bypass the agent in this case, you may still owe compensation to that agent if you close the deal.
As for the rest of the conversation, I think you have demonstrated that you and the agent are not a good fit. If you are unhappy with the agent and do not feel like they are providing value to the process, then you should move on. If you want to do it yourself, cool, go for it, know that if you use the listing agent, the commission they are going to get is for just doing your paperwork because they are not going to be truly representing you. (side note: Dual Agency is not legal in every state. so it may not even be possible.)
Next time you do find an agent, you need one who is a local expert and FULL TIME. Being a real estate agent is not something that can be done well if you are only half-in.