immature singing voice? :/?

i've noticed that whenever i sing i think i sound okay but when i record and listen to it it sounds REALLY immature/girly, kid-like!

however when i sing those really low songs, i sound better

i would like to know how to get a more MATURE singing voice? cuz i really like singing high pitch songs but my "kid voice" is getting annoying?

btw im 13 and none of my friends sing like me D: and no my voice doesn't crack much
oh and when i talk its not like my singing voice at all
 
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