Struggling with health and feeling distant from faith, I'm worried if my duas are still heard.

Assalamu alaykum everyone. I grew up in a Muslim family, but for some reason, I was never taught how to pray properly. Over the years, I’ve fasted here and there, but not consistently. I’ve had ups and downs in my iman, even moments of doubt. Around the age of 13, I faced really tough health problems and extreme stress, and that’s when I started looking into Islam on my own. Though my health got a bit easier to manage, it never fully went away. Now, after a few years, I’m back at that same point-struggling with my health and feeling desperate. I’ve never prayed daily, and I didn’t fast at all during Ramadan. I beg Allah almost every day to improve my health and make things better, to give me a normal life. It’s gotten so hard that I sometimes feel I can’t go on, but I keep making dua, asking Allah to ease my suffering or take my life if that’s all that’s written for me. The pain has become almost too much to bear. Once my health improves, inshaAllah, I plan to start praying regularly, fasting, and even learning Arabic. My big question is: since I’m not really practicing, is my dua still valid? Will it be accepted? For now, I’m going to try to learn how to pray while dealing with everything.