How To Put Crypto On A Usb?

do i have to install it on a pc?

howto i send funds from poloniex to another wallet?

i have done all of the above in the past 24h with no problems. I just created this new account so i can buy some bitcoin with visa without having to go through 3 different stages of verification.. is there something with my history that is causing issues? Or do you think it’s all in my mind. ive done everything right, im talking about when using an exchange where you set up your wallet for exchanges how do they check your identity and or funding source? if this is not possible how can they check your “validation” story ie. bank statement, letters of attestation etc… is there something with coinbase that cant be told verbally since it would prevent me accessing their site??

thank you!