you don't trade off your security, instead you increase it.
for Bitcoin you can increase your privacy with various tools like coinjoin and lightning network with convenience tradeoff
or you just use Monero.
If you have questions feel free to ask in [email protected]
You should check privacy coin Monero.
Matrix and XMPP is pretty much popular in XMR community
And often discord and telegram channels are bridged with other platforms.
They keep ignoring Monero support request over 5 years while its one of most requested feature. https://protonmail.uservoice.com/forums/935538-accounts-payments/suggestions/33188971-accept-monero-for-payment
and bitcoin is not available as a payment method during account sign up, only after creating the account.
end to end encrypted between Facebook and you.