Struggling with whether my repentance is accepted

Assalamu alaikum, brothers and sisters. I’m not even sure if I’m explaining this right, but I really need some advice. I’ve been feeling like my repentance isn’t valid. It all started around 2-3 months ago, in the last week of Ramadan. After being away from Islam for almost a year, I decided to come back, alhamdulillah. That day, I whispered the Shahada. At night I cried, but I can’t figure out why. Maybe it was because I felt I had wasted half the month fasting and praying without being in a state of iman, even though I thought I was Muslim at the time. But I don’t like that I was more bothered about wasted time than actually feeling remorse and wanting forgiveness from Allah. It makes me sick that I don’t feel that remorse at all, and I worry my repentance isn’t accepted and I’m still not truly Muslim. I don’t know if this is just waswas, but I honestly don’t feel it, and I’m lost. Also, I just realized yesterday that I said the Shahada incorrectly back then, so I repeated it, but I still feel like there’s something more I need to do. Please make dua for me.