Struggling to Focus in Salah

Assalamu alaikum. I need some advice on how to improve my concentration in prayer. Lately, life has been tough, and during salah my mind wanders to worldly matters. I try my best to focus, reminding myself that this prayer is for Allah, and I even close my eyes to avoid visual distractions. But still, I lose focus. Does anyone have any tips or methods that help them stay completely focused during salah?