Study your music before sight-reading
It’s really common for my piano students to just start reading a piece of music from the beginning, with no preparation or planning. But just launching into sight reading with no preparation is an easy way to get lost and frustrated. You can set yourself up for breezier success if you find some relationships between your notes before you start to play.
I never sight read without studying at least the first line or two, and I always encourage my students to do the same. Here’s a walkthrough of how I do it!
Good luck!