@KanatoSakamaki17 try to get to know them. see what they like what they dont like . try and start a conversation with them, learn a bit about them from their friends. drop a couple hints. like asking them to walk with you. asking him to the park. even winking, see if they blush. ask their friends for help, or moments you can have alone. dont make it awkward when/if youre alone with them. just relax and strike up a conversation about what they like. or ask them questions. not too personal. and share some funny experiences of yours.
example:
you: hey i heard you like [what they like]
them: yes?
[or if theyre sassy theyd say summit like]
yeah, so what?
you: i like the same! (if you do like it)/ oh i prefer {what you like}
them: yeah.
(then just talk about eachothers interests)
them