"Romans 9:22 does not say “vessels of wrath God allowed to be fitted to destruction,” and it does not say, “vessels of wrath that fitted themselves to destruction.” There is no passive language (permits, allows, or lets happen) in this text.
The perfect tense verb prepared or fitted (katartizō, κατηρτισμένα) is in the passive voice. This grammatically rules out the idea that God only permitted reprobates to be fitted to destruction, and it certainly doesn’t imply that God fitted the vessels of wrath to destruction because of foreseen disbelief.
Prepared or fitted (katartizō, κατηρτισμένα) indicates that the vessels of wrath were eternally fitted to destruction by God. Scholars have argued that κατηρτισμένα means “of men whose souls God has so constituted that they cannot escape destruction” (Thayer, Thayer’s Greek-English Lexicon of the New Testament, 2019 [1896], p. 336), or “…designed for destruction” (BDAG, 2000, p. 526).
from Sonny Hernandez, Biblical Reprobation: A primer on the most hated and neglected doctrine