What to think about with trezor?

Hi I just bought a trezor and want to transfer from coinbase to my trezor cold storage. 1 my btc bought on coinbase and sent to my cold is forever traceable? 2 if I byu p2p later on and sent to same trezor that will also be traceble for inom tax 3 to be able to skip taxes/ irs or i need to get another cold storagr and buy from non kyc Exchange? 4 when i will spend btc it is likeky i convert / sell in Fiat and what doe it matter then ? Irs will still tax me evem though i sell btc from " none traceble" btc?

Please help we and explain what is best to do Regards Newbee