Perhaps you’ve heard of the new covenant?
Christ and his Apostles weren’t bound by the old law.
1 Cor 11:23-29 is very clear that receiving the Eucharist unworthily means you are guilty of his body and blood.
That would not be true if the act were symbolic.
From the KJV: 1 Cor 11:27-29
Wherefore whosoever shall eat this bread and drink this cup of the Lord, unworthily, shall be guilty of the body and blood of the Lord.
But let a man examine himself, and so let him eat of that bread, and drink of that cup.
For he that eateth and drinketh unworthily, eateth and drinketh damnation to himself, not discerning the Lord’s body.
On the contrary, this is what Jesus had to say about the Law.
Matthew 5:17-18 17 “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them. 18 For truly, I say to you, until heaven and earth pass away, not an iota, not a dot, will pass from the Law until all is accomplished.
In addition, the new covenant didn't take effect until after Jesus death. It COULDN'T because Jesus had not yet died and rose, conquering death. Therefore, the wine and the bread at the Last Supper (the Passover) HAD TO REMAIN wine and bread and be understood by the disciples in that manner.
And this is from the Council at Jerusalem, which Catholics claim Peter chaired as first pope.
Acts 15:13-29 13 After they finished speaking, James replied, “Brothers, listen to me. 14 Simeon has related how God first visited the Gentiles, to take from them a people for his name. 15 And with this the words of the prophets agree, just as it is written,
16 “‘After this I will return, and I will rebuild the tent of David that has fallen; I will rebuild its ruins, and I will restore it, 17 that the remnant of mankind may seek the Lord, and all the Gentiles who are called by my name, says the Lord, who makes these things 18 known from of old.’
19 Therefore my judgment is that we should not trouble those of the Gentiles who turn to God, 20 but should write to them to abstain from the things polluted by idols, and from sexual immorality, and from what has been strangled, and from blood. 21 For from ancient generations Moses has had in every city those who proclaim him, for he is read every Sabbath in the synagogues.”
22 Then it seemed good to the apostles and the elders, with the whole church, to choose men from among them and send them to Antioch with Paul and Barnabas. They sent Judas called Barsabbas, and Silas, leading men among the brothers, 23 with the following letter:
“The brothers, both the apostles and the elders, to the brothers who are of the Gentiles in Antioch and Syria and Cilicia, greetings. 24 Since we have heard that some persons have gone out from us and troubled you with words, unsettling your minds, although we gave them no instructions, 25 it has seemed good to us, having come to one accord, to choose men and send them to you with our beloved Barnabas and Paul, 26 men who have risked their lives for the name of our Lord Jesus Christ.27 We have therefore sent Judas and Silas, who themselves will tell you the same things by word of mouth. 28 For it has seemed good to the Holy Spirit and to us to lay on you no greater burden than these requirements: 29 that you abstain from what has been sacrificed to idols, and from blood, and from what has been strangled, and from sexual immorality. If you keep yourselves from these, you will do well. Farewell.”
The prohibition against eating blood is one of the FEW OT law commandments reiterated by the apostles for the church.
Now, you can try to rationalize your way around it all you want, and Catholics always do, but it says what it says.