Thanks for this tipThe biggest issue for you to solve will be pitch problems. There‘s an app I use called InTune where it plays you two notes and you have to tell if the second note is higher or lower in pitch. The difference in pitch goes lower and lower until you’re unable to do it anymore. Try to look for some games that work on your pitch perception.
Sit at a piano or keyboard or phone or computer app and keep playing each note then sing it. Don't attempt anything else until you've nailed those 13 notes and can tell the difference between each one and when one of them sounds 'out'.
Can you give me tips to improve my singing ?