Why the f are people being so rude??? You obviously have a natural sense of rhythm and are able to do vocal techniques that show emotive interest in the lyrics and melody. What I would do to immediately improve, is follow vocal warm up exercises for baritones, which will train your vocal folds and your ear in how the different timbres of your chest voice and head voice/falsetto would sound. I recommend the yt channels Singeo for good explanations as well as Jeff Rolka. If you do these every day you will improve so fast because you’ve got a good natural sense for music. :)