Why do Catholics believe grace is infused rather than imputed? Early Church Father support might be helpful too.
Some of the “proof texts” scripturally I’ve come across from CA seem to be speaking of the Holy Spirit, not necesarrily grace. What am I missing in my understanding?
It seems God is pouring out the Holy Spirit in most of the following verses, not grace.

Are we filled with the Holy Spirit or grace?*
“For the palace will be forsaken . . . until
the Spirit is poured upon* us from on high, and the wilderness becomes a fruitful field, and the fruitful field is deemed a forest” (Isaiah 32:14-15).
“And in the last days it shall be, God declares, that I will
pour out my Spirit upon all flesh, and your sons and your daughters shall prophesy, and your young men shall see visions, and your old men shall dream dreams; yea, and on my menservants and my maidservants in those days I will
pour out my Spirit; and they shall prophesy” (Acts 2:17-18).
“And when they had prayed, the place in which they were gathered together was shaken; and they were all
filled with the Holy Spirit and spoke the word of God with boldness” (Acts 4:31).
“And the believers from among the circumcised who came with Peter were amazed, because the
gift of the Holy Spirit had been poured out even on the Gentiles” (Acts 10:45).
“When he came and saw the grace of God, he was glad; and he exhorted them all to remain faithful to the Lord with steadfast purpose; for he was a good man,
full of the Holy Spirit and of faith” (Acts 11:23-24).
“And hope does not disappoint us, because
God’s love has been poured into our hearts through the Holy Spirit which has been given to us” (Romans 5:5).
“And do not get drunk with wine, for that is debauchery; but be
filled with the Spirit” (Eph. 5:18).
“He saved us, not because of deeds done by us in righteousness, but in virtue of his own mercy, by the washing of regeneration and renewal in the
Holy Spirit, which he poured out upon us richly through Jesus Christ our Savior, so that we might be justified by his grace and become heirs in hope of eternal life” (Titus 3:5-7)
I’m just basically confused and don’t have a strong stance on this yet, so any help is appreciated.