Feeling Distant from Allah's Mercy After My Mistakes

Assalamu alaikum. I don't want to go into all the details, but I really need to share how I'm feeling right now. I've made some serious mistakes lately that have affected both my deen and my dunya, and now it feels like everything is falling apart. Honestly, I know I brought this on myself. These choices might cost me a lot in this world, but what hurts the most is how I turned away from Allah. It wasn't just missing prayers; in my frustration, I said things I deeply regret. I know that only Allah's help can fix this situation, but my heart feels so heavy. It's like I'm convinced He's left me or is angry with me. I want to turn back, to pray, but my own feelings and this mental block make it so hard. What should I do? Has anyone else felt this way and found a way back?