I'm not the best person to answer this as I am in a similar situation. I have recently started writing and recording my own music during COVID.. I just kept working on my voice and I can tell a huge difference between my first recording and my latest recording. It takes time and energy and practice. I still wouldn't say I have the greatest voice but I'm a lot more confident in my voice and I feel like that's mostly what it takes. Just keep working and practicing on your vocals. Also if that means taking lessons take the lessons! I really want to just to fix my tone.