Why Does Peace Feel Out of Reach Even with Worship?

Assalamu alaikum. I've been dealing with a lot of frustration and exhaustion for months because of my father's work situation. I'm performing my five daily prayers regularly, reading Quran every day, and giving as much sadaqah as I can. I also try to pray Tahajud when I'm able and am doing my best to avoid sins that could anger Allah (SWT). As part of my sadaqah, I feed the stray cats in my area. But seeing them sick, injured, and helpless causes me so much stress. They look so vulnerable and in pain, and it makes me deeply sad that feeding them is all I can really do to help. Even my everyday tasks seem to come with constant problems. I do manage to complete them, but there's always extra difficulty and stress at the beginning that makes everything harder. My main question is this: if I'm doing all this worship, why can't I find peace? Why does it still feel like everything is collapsing and the world's cruelty has stolen my desire to live? My mental health is suffering badly. I thought drawing closer to Allah (SWT) was the answer, but right now, it doesn't seem to be helping. May Allah reward you for any advice.