Replacing pads and air filter! - Toyota Celica, 2.0L, 1994

Yesterday I decided to change the pads ... because when braking, this screeching squeak annoys me very much!))) We went to Inomarket ... bought the front and rear ... we put everything in the back ... the front gave not the ones ... the ones that stand on ED. Came back ... changed! Now brakes as if rooted to the spot))) And does not creak))))) Immediately bought an air filter! Also changed!