Thinking of Coming Back to Islam After Some Time Away

As-salamu alaykum everyone. I'm at a bit of a turning point in my life, and I'm feeling a mix of emotions. On one hand, there's regret and shame, but on the other, there's this strong pull to return. I was raised in a Muslim family but, honestly, I went through a period where I had a lot of doubts and ended up stepping away from deen for about 4-5 years. During that time, I didn't live according to Islam at all-I know I did things that are considered major sins, and I even had a pretty harsh, anti-religious attitude. I struggled with some dark phases, like depression and dealing with addictions. Deep down, I think I know the answer, but I really value hearing from others who understand. For so long, I was living in a state of disbelief. I acted arrogantly towards Allah, mocked the deen and its followers, and just had a really negative outlook. It led me to some serious mental and spiritual dead-ends that really messed up my life. Alhamdulillah, I feel like I've grown a lot since then-my mindset has shifted completely. What really started to change my heart was following what's been happening in places like Palestine, Iran, and previously in Iraq and Afghanistan. At first, I was indifferent, but over time, my perspective totally transformed. It pushed me to finally open the Quran and read it properly, and to learn about the life of Prophet Muhammad (peace be upon him). I'm still studying and trying to understand more. The idea of striving for the sake of Allah and His deen has been on my mind for a while now. I'd love to hear your thoughts-from a personal, discussion-based, and practical angle. Is it possible for someone like me to come back to Islam after all this? And what about all the things I did during those years? Jazakum Allahu khayran in advance.