Missed Asr prayer and feeling lost on how to repent

Assalamu Alaikum wa rahmatullahi wa barakatuh, everyone. I really need some heartfelt advice here, so please keep this up. I was just scrolling on my phone, telling myself I'd pray Asr on time, no problem. But time just slipped away, and suddenly it was Maghrib. Astaghfirullah, I even thought about delaying it earlier, just to get a little break-may Allah forgive me. Now I've missed it, and I know it's a big sin. I'm so ashamed, and my heart is heavy. I prayed Asr right when I noticed, and I've been begging Allah for forgiveness, but I'm scared He might not forgive me. How do I truly repent for this? What can I do to make things right? I'm desperate for any guidance. Jazakum Allahu khairan.