Finding Peace in Worship, Yet Struggling to Focus During Salah

As-salamu alaykum, brothers and sisters. I've noticed that when I read the Quran or do adhkar on my way to school, I feel so calm and close to Allah-it's like nothing can disturb that peace. But then, when it's time for salah, my mind just won't stay focused, and I can't hold onto that same serenity. It's really frustrating. Anyone else deal with this? If you've found ways to get past it, I'd love to hear what worked for you. Jazakum Allahu khayran!