You always give only portions of a sentence in one scripture of one completely isolated from all context as support for your claims. No one, not even the pope, will ever gain a true understanding of scripture from doing that. It is proof texting (and there is no such thing as a proof text) with confirmation bias. It provides as much support for the premise as a swamp does for a buildings foundation.
Christ did not "reform" the old covenant. He fulfilled it and it then it passed away. Heb 8:13 says clearly
When He said, "A new covenant," He has made the first obsolete. Now what is becoming obsolete and growing old is ready to vanish away.
Back to Heb 9 beginning in verse 6
6These preparations having thus been made, the priests go regularly into the first section, performing their ritual duties,
7but into the second only the high priest goes, and he but once a year, and not without taking blood, which he offers for himself and for the unintentional sins of the people.
8By this the Holy Spirit indicates that the way into the holy places is not yet opened as long as the first section is still standing
9(which is symbolic for the present age).
d According to this arrangement, gifts and sacrifices are offered that cannot perfect the conscience of the worshiper, 10but deal only with food and drink and various washings, regulations for the body imposed until the time of reformation.
11But when Christ appeared as a high priest of the good things that have come,
e then through the greater and more perfect tent (not made with hands, that is, not of this creation)
12he entered once for all into the holy places, not by means of the blood of goats and calves but
by means of his own blood, thus securing an eternal redemption.
13For if the blood of goats and bulls, and the sprinkling of defiled persons with the ashes of a heifer, sanctify
f for the purification of the flesh,
14
how much more will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, purify ourg conscience from dead works to serve the living God.
23Thus it was necessary for the copies of the heavenly things to be purified with these rites, but the heavenly things themselves with better sacrifices than these.
24For Christ has entered, not into holy places made with hands, which are copies of the true things, but into heaven itself, now to appear in the presence of God on our behalf.
25Nor was it to offer himself repeatedly, as the high priest enters the holy places every year with blood not his own, 26for then he would have had to suffer repeatedly since the foundation of the world. But as it is, he has appeared once for all at the end of the ages to put away sin by the sacrifice of himself.
The Catholic church sets it own priests up in the place of Christ and establishes a whole series of new dead works.