Hello, need some help trying to find out what plug this is, need a male to female extension but can’t seem to find it anywhere on the internet.

 

There are many makers of plugs and sockets of that general style and they are all just a bit different so that they do not mix. So locating a compatible connector will be quite a challenge. The standard internet sales organizations will be of no help at all, as you have discovered.So one choice will be to purchase two mating pairs from an electronic parts supplier, and create your own extension cable, and then cut the existing cable and install a mating pair in-line. That will allow the addition of whatever length you need and also allow a return to the original length.
One caution is that the attachment to the wires is usually a crimp connection and a challenge to do adequately without the correct crimping tool.

 

Looks like a standard

MATE-N-LOK

https://www.mouser.com/datasheet/2/418/7/ENG_CD_172165_D2-2016519.pdf