Can't find my SD card on my Motorola Z9

HI, I have an old phone The Motorola Z9 and I downloaded a game from a website. I choose to download on my pc since I do not have a data package. On my sony ericsson I could go to the installation file on either my computer or on the micro sd and it would install the game on my phone. However with motorola Z9 it does not give the the option to view received files or "files" on my sd card other than music or pictures, in fact I can't even find or view the SD card on my Z9. Is there a way I can add a game onto the phone using files I put on the sd card with my computer? I had motorola phone tools but it will not recognize the phone even  tried doing updates  but the Z9 seems to be a difficult phone. Please can anyone help me, I have difficulties with my hands and the Z9 works awesome for me, I just would like to  get some games on it. Thanks so much