How do I produce songs similar to this singer?

[urluv_deepa]

Ok, so there is a singer "Fujii Kaze", and his songs are the best things that have touched my ears. I want to make songs like his. I don't know what makes them so soulfully warm and happy, the whole vibe is my calling. I'm a female BTW. My voice is most similar to Hanni from Newjeans, just thinner. I would do anything to make songs like his, they are just so UNIQUE and WARM. I would seriously appreciate it if someone could tell me how. Beatwise, not TOO much of a problem (I usually buy beats), I just need to know the genre. Also, I might be wrong, but I feel like his songs feel really come from his Vocal Melody/rhythm (like the voice singing part over a beat.) Which is also what I ALWAYS have the hardest time doing. I will honestly do anything to help achieve this dream. I don't have any instrument knowledge, but If I have to do that to make songs like him, I 100% will give it my all. I would love a breakdown on his feel (if it's possible.) Here is his tiny desk performance (doesn't fully studio perform the songs, but I want to save you time, and you KINDA get the gist, you could actually watch his studio songs if you have time!: https://www.youtube.com/watch?v=rGyQHyDMZZI

Here are some other songs that I like the vibe of and think are similar (correct me if I'm wrong), also this is Hanni: https://www.youtube.com/watch?v=Rj7N4ThLGQY

another one: https://www.youtube.com/watch?v=fu4nQrNJ_4g

I hope you get the feel I'm going for, (mainly Fujii tho.) I just don't know if it's Vocals, His melodies/tunes, or his beats? THANK YOU SOSOSO MUCH, I appreciate it with all my heart, I'm still 15 so I have time to do whatever you tell me to do to reach my goal. (listen to a specific genre to get more used to it, learn an instrument :(, lol, etc.) Thanks for you're help, you guys are the best!