pro micro timers and controlled pins datasheet
According to the datasheet ATMega32U4 has four timers:


Timer0 controls pin functions OC0A, OC0B
Timer1 controls pin functions OC1A, OC1B, OC1C
Timer3 controls pin functions OC3A
Timer4 controls pin functions OC4A, OC4B, OC4D and inverted !OC4A, !OC4B, !OC4D


Pin functions are multiplexed on physical pins. E.g. OC0A and OC1C are multiplexed on pin 12 (PB7). So those pin functions should not be used at the same time. You need to choose which one you want to use. See the Pin Configurations chapter for more details.