No judgement here, we were all in your position once!
First thing about IEMs is the choice of ear tip. Make sure you cycle through every size included, if none of them fit, try foam tips (some should be included). Be sure to roll the foam tips to compress them down, then hold the earphones in your ear so they expand into a good position. Try pushing the earphones further into your ears or angling the housing backwads and forwards.
For me, I push them in and twist them backwards until the cable feels locked in over my ear and the earphone is seated in my outer ear. Joe wrote an excellent article about it on THL that may be helpful, see
here.