If you're trying to manually feed the yarn through without the use of a threading tool, it's going to be nearly impossible to do.
Like other comments mentioned, this is what I use and they work great for stringing multiple strand of yarn through your needle.
You can buy a loop tool for micro bead hair extensions and just put the bead on it and thread a bit of hair though.
10 Pack Wooden Hair Extension Loop Needle Threader Pulling Hook Tool and Bead Device Tool for Hair or Feather Extensions (Multicolored Loop Tools) https://www.amazon.com/dp/B07VS755H7/ref=cm_sw_r_cp_api_i_hzcjFbF10QZG7
Hahaha, I'm happy to help!