You really do have to go and try out a number of pistols before you buy one. Asking people on the internet which pistol to buy before you have tried some out is much like asking someone to recommend a suit of clothes for you...there are all sorts of other questions such as suit for what, material, double or single breasted, size, etc, etc. The same applies to handguns. You need to gather more information before the people here can give you really relevant suggestions.
The people who have been kind enough to respond to you have given lots of really diverse, and often very good suggestions for you to consider. I don't want any of the respondents to think I am even remotely suggesting their information is without value, wrong, or poorly thought out. Rather, I think if you put all the information given I this thread, you will have a good starting place for your own information gathering.
Once you have gathered more information, then the responses in this thread will start making more sense to you. You really need to actually shoot some of the handguns you are considering, and at least get a basic handgun safety/marksmanship lesson. The reason I am suggesting a basic lesson is because there is a great difference between the way you pull the trigger on a revolver, and on a semi-auto handgun. Even within the various semi-auto handguns, there is a giant difference between the match grade trigger on a 1911 and the first double action pull on a Beretta 92, or a Sig. Only by trying them out will you figure out which ones you like, and which you dislike. There are some that I downright detest..
I wish you nothing but success, and know that once you start down that rabbit hole of investigating handguns by doing more than reading about them, you will really enjoy yourself.