Pattern help

I used to knit a lot but haven’t in probably about 3 years. I decided to make a scarf but am a little confused by the pattern I picked. I don’t understand how to do this without decreasing stitches. The pattern is just 2 row repeated shown below. Any tips would be great thanks!

Can you please tell us the pattern name and post a link to it please? Don’t post the pattern here.

Row 2: k1, * [k2tog through the back loop, bring yarn to front, p2tog] all
in the next stitch together, repeat from * to last stitch, k1.

Start by doing your k2tog through the back loop. Leave the stitches on the needle. Bring the yarn to the front of the work and work a p2tog in the same stitches. Drop the stitches off the needle. You do work a decrease but you also increase and maintain stitch count. It’s similar to this video except that you’re working with two stitches.