Are you mixed Spanish? Your name sounds Spanish.
My mother told me that telenovelas were a big hit in Indonesia when she was pregnant with me, so my parents chose a name with that vibe. No deeper reason (they just thought it sounded cool lol). If you are curious about more common Indonesian names, see Indonesian name.
On the other hand, some Chinese Indonesians (myself included) have, at times, felt pressure to downplay aspects of our Chinese identity due to historical and political factors. See Chinese Indonesian surname.
Why did you decided to move from Indonesia to Japan?
TLDR; I wanted to push myself into a more demanding environment. Leaving ITB was probably the better option for me.
How to study Japanese?
Pick up Anki. Anki, Anki, Anki.
Write sentences with the words you just learned.
Consume Japanese media. And most importantly,
speak the language.
