Starting to get those urges and I don’t know what to do...

[I’m 16] So... in a way this started this time last year when my now ex-boyfriend and I were sexting... we wanted me to master bate with him and at first I was a bit weird about it... so after we broke up I stopped, but now a year later I think I want to start masterbating?? But whenever I go into my room, my siblings or parents come into my room to see where I was (cause I’m usually in the Lounge room. IDK... I think I’m also kinda scared to start... like I’ve been kind of watching a bit of porn more recently too? I’ve kinda been looking at sex toys too... and am tempted to get a vibrator or something... once I set up my own bank account.. but I’m scared that they’re gonna open it or ask me what it is (cause the mail comes when I’m at school) idk... I’m just so confused as to how to go about this whole thing... I don’t wanna ask my Mum cause it’s not something I wanna talk to her about...

I’m sorry this whole post is weird lol... I just really need some advice...