Yes - venial sins can be forgiven (blotted out etc) in many ways!
For example Holy Communion, Contrition and imperfect contrition, devote use of Holy Water, acts of love of God, reading Sacred Scripture, prayer etc etc
St. Augustine (and others) noted that the praying of the Our Father forgives our “daily sins” (venial sins). In the early Church praying the Our Father three times daily was customary (one I observe).
It is of course good then to bring at least some venial sins to confession - for the Sacrament is very important and much happens there.