I hate to discourage you Kush, especially as you're so enthusiastic, but I have to tell you that what you have is not a real saxophone - it's what we often call an SSO or saxophone-shaped-object (and that's when we're being polite!). These are very poorly made copies of Adolphe Sax's original instrument, hence the old-fashioned design and fewer keys. The pads are very soft and faced with thick red plastic 'leather' and I'd be surprised if they sealed at all well, so if you manage to play any notes at all you're doing a good job!
By all means continue practising to get the feel of the instrument, but don't expect to achieve anything until you get your real sax.
Sorry to be the bearer of bad news, and good luck to you.