I usually take a needle and thread the yarn through the thickest section like what that poster above noted too! Another option for next time is to just use the magic knot to join and then you don’t have to deal with ends at all (until the end of the project haha)!
THANK YOU VERY MUCH
When blending in the threads of new yarn in a scarf, start by overlapping the new yarn with the old yarn for a few stitches to create a smooth transition. You can do this by knitting or crocheting with both strands held together briefly before dropping the old yarn completely. Another option is to weave in the ends of the new yarn carefully on the wrong side as you go, making sure to secure them well without adding bulk. Keeping the tension consistent during the switch helps the join stay invisible and prevents gaps or bumps in the fabric. Taking your time with this step ensures a seamless, polished look in your finished scarf.