Assalamu Alaikum - Has Anyone Hit Rock Bottom and Then Allah Made a Way?

Assalamu Alaikum, I’m a 25-year-old Muslim working as a Mechanical Engineer in Riyadh, and I’m feeling completely lost. I’m hoping to hear from brothers who were at their lowest and then Allah opened a way for them. I wasn’t a strong student. I just got through engineering exams and never felt I really understood things. My parents were strict - they cared for me, but there wasn’t much emotional support. I was bullied as a child, and that left me with low confidence, fear of speaking up, and a constant feeling that I’m not good enough. Now I’m on site training after five months, and honestly I don’t understand a lot of what’s going on. I look at other engineers and feel worthless next to them. I try to learn Revit and mechanical design, but seeing others’ work makes me feel so small, like I’ll never be able. I’m the eldest sibling and my younger brothers and sisters look up to me, yet I feel like I’m failing at everything. On top of that, I’m spiritually stuck. For the last five years I’ve been praying, reading Qur’an, even waking for Tahajjud. I make dua and try to stay consistent, but I keep falling into sins. It’s this terrible cycle: guilt, repentance, crying, then falling back again. The guilt and fear that Allah is displeased make even ibadah feel heavy and hard. I genuinely want to do good for Allah, for my parents, and for myself, but I feel weak, blank, tired, and lost. Has anyone been through this kind of low point - mentally, spiritually, emotionally - and then Allah opened a way for them from somewhere they didn’t expect? If so, could you please share your story? I really need hope and practical steps I can try. JazakAllah khair.