:::Of course I haven’t sold my will and intellect to the Magisterium.:::
Neither have we. We subjugate ourselves to God using the instructions and the institution that God, and then the person of Christ, left to us.
No selling, no buying. Just reaching out for the grace of God so that we can experience His promises to us.
"Gave" is more appropriate.
Code Of Canon Law Book 3, Part o
Canon 752
While the assent of faith is not required, a religious submission of intellect and will is to be given to any doctrine which either the Supreme Pontiff or the College of Bishops, exercising their authentic Magisterium, declare upon a matter of faith and morals, even though they do not intend to proclaim that doctrine by definitive act. Christ's faithful are therefore to ensure that they avoid whatever does not accord with that doctrine.
Go along or get out.
Neither have we.
Of course you have. You have to take what the magesterium teaches you on pure, blind faith, or else you are relying on "private interpretation".