generally, i love your tone. there's this rebellious and attitude flavour which i really like.
firstly, you have potential. i'm no one in the whole music thing, but i know my singing. you don't really need lesson unless you wanna be extremely good. right now, my rating for you is 7.5/10.
secondly, you're using your throat voice. and in your vids, i see you straining to hit the higher notes. use the right breathing techniques: breath out, tummy normal position. breathe in, tummy out. try doing it sitting down. make it a habit.
when you're singing those longer notes or reaching high notes, move your tummy out gradually. i promise you, you'll realise there's less strain on your throat and your pitch improves.
last, its not necessary to sing at the actual key of the song. ask your guitarist to experiment with a capo and see which key suits you. sometimes the key you're singing at isn't the right one for you voice. don't force your vocal chords to sing other people's key. everyone is different. if everyone is the same, buble can sing mariah and mariah can sing metallica.
you can email me too if you need help. with your recordings too.
tc glhf.
