My very OWN "FIRST GUN" was a Glock Model 19C. I love Glock even though I am more of a single action revolver lady now. I could rack them in the Model 17, the Model 19 and the Model 19C. (Before that time frame - I used my late husband's revolver for self defense.)
I can't rack the slide on MANY semi automatic pistols due to an old injury, former broken up left arm, hand and side due to a bad fall plus with arthritis now at 58 years old. I can rack SOME of them but not ALL styles and/or brand names. Same as I can still SWIM but not do a fabulous back stroke as I used to do with limited range of motion. I was always an outstanding swimmer.
I COULD rack the slide on the Glocks in 9mm, the S&W Model 41 that I bought for my late husband, the S&W Model 22A, the famous Ruger Mark (?) semi automatic pistol in 22LR, etc. There were many others that I had trouble with due to my physical problems and weakness NO matter how I tried various 'ways' of doing this.
Best wishes to you and you will love the Glock. Give the Glock a chance and follow the advice of others who are far more into semi automatic pistols than I am. I do NOT know tons about semi automatic pistols. My late husband and my groom aka husband know more about those pistols than I do. My Glock was smooth and a straight shooter from the gitgo. I do not know if they changed them from May 1998 (NIB) or not - that was when I bought my very FIRST own gun.
Take care.
Catherine