1998 Pontiac Grand Am could this be a Master cylinder issue

Brakes problem
1998 Pontiac Grand Am

Ive had the car for some time now and every once in a while the passenger side brake would grab harder than the rest, the dealer said not to worry as it has new pads and rotors, about a month ago while trying to stop the car acted like it was skidding on wet leaves grab let go grab let go grab let go, it didnt happen again so I thought it was a fluke and paid it no mind. This week however it has done it almost every time ive stopped the car, I have also noticed a clicking sound while its happening. I am female and do know a bit about cars and as always when I go to a shop I like to know exactly what to expect and also expect not to be taken advantage of because I am female and we arent supposed to have knowledge about cars, I however do know about cars but when it comes to brake I just know how to change the pads and rotors and have never had this type of an issue before