[HELP]Custom Recovery

Guys please i own an infinix hot 2 x510 with the Android One Stock OS i wanted to know is there any way i can install a custom recovery without having to unlock the bootloader because all the tutorials i have seen so far for installing a custom recovery for andriod one the devices that were listed my device wasnt part plus my device has no stock recovery and theres no option to access fast boot mode also with my device how will i be able to check if the bootloader is locked or unlocked since there is no fast boot mode any help will be highly appreciated thanks