i had tried to purchase bitcoin anonymously but ended up purchasing with my paypal which now turned into a huge pain in the ass. i have purchased from p2p market where only the sender knows my paypal and so does my bitcoin address. how can i get out of that? i know bitcoin addresses are transparent and can be traced by others who know my address. how come i be escaped from the tail i left through my paypal and the address?
Depends who you are trying to hide from. You now have a Bitcoin purchase potentially attached to your legal identity, so if it is more than a trivial amount and you are expecting to evade taxes or something, at some point your government could wonder at what price you cashed out your BTC regardless of the use of mixers or coin swaps. If you're just trying to hide it casually from other users here or something, then you messed up with how you purchased and you should start over and try again using an anonymous account that isn't tied to your IP or identity and a means of payment that can't be traced back to you.
As for whoever sold you BTC for paypal, they should be alerted that accepting paypal for BTC is asking to be scammed.