From the manual for the Scarlett 2i2:
The preamp gain is appropriate for microphones when an XLR plug is inserted, and for higher level signals when a jack plug is inserted.
Get a jack->XLR adapter, preferably the device listed by ojacques because you also need the 2.7 V power supply.
Rode has now a device which allows to plug in microphones which need to be powered by power usually provided by smartphones (2.7v) through TRRS such as Rode's Lavalier Go or Shure's MVL/A to a USB sound card or any mic entry using XLR.
This is Rode VXLR+. The XLR has to provide 12-48V phantom power.
From Rode's site:
The VXLR+ is a 3.5mm female TRS ...