Forty years ago my older brother turned to me in the middle of a song and said,"Please shut up. you do not have a note in your head."
For the next ywenty years i never opened my mouth. But I did want to sing. So, I learnt a few funny songs and recitations. The recitations did not have to be in tune. The funny songs were such that people listened to the words and did not worry about the tune.
After a while I gained confidence.
I still would be poor at singing but have developed a style of my own. I still sing parodies etc. and , whether other people do or not, I enjoy myself.
Good luck. If i can pass on any of these songs to you, i would be pleased to do so.