Nothing you described sounds anything like malpractice. But if you think it is or feel strongly about it, all you need to do is call your local bar association and ask for a list of malpractice attorney for a free evaluation appointment.
Here's the important legal secret: if the attorney agrees to take your case and he will pay upfront all the costs, to be recovered when you settle or win, you have a real case. If the attorney wants you to pay costs or hourly fees, you do not have a viable case. It's like car accident cases or work injuries. Yes, the attorney takes the lion share of the settlement but you don't end up wasting money. Under no circumstances should you agree to pay anything because you will just be throwing your money away. Again, nothing in your post sounds like legally actionable malpractice at all.