Hello. I do not remember the last malfunction with my defensive Browning HP 9mm so it's been thousands of rounds and my Glock 26 has never malfunctioned, but I only have several hundred rounds through it. If your problem is not specific ammunition that is "right on the reliability edge," then there's likely some little minor something wrong with your piece. I am certainly NOT a Makarov expert, but these things are supposed to be very, very reliable and the one and only Mak that I own is. It could very easily be an ammo problem. If it's not, you might try a different magazine if by malfunction you mean a failure to feed. If it's not extracting the fired case, it could be a chiped or broken extractor or weak extractor spring.
Best.