Yes - Venial sins are forgiven in many ways -besides confession (frequent confession is greatly recommended) - acts of perfect or even imperfect contrition, prayer, reading Sacred Scripture, the Mass, Holy Communion, the devout use holy water, other sacramentals, little short prayers during the day, acts of love etc
I will add a related section of the Catechism:
From the Catechism:
1436 Eucharist and Penance. Daily conversion and penance find their source and nourishment in the Eucharist, for in it is made present the sacrifice of Christ which has reconciled us with God. Through the Eucharist those who live from the life of Christ are fed and strengthened. “It is a remedy to free us from our daily faults and to preserve us from mortal sins.”
1437 Reading Sacred Scripture, praying the Liturgy of the Hours and the Our Father - every sincere act of worship or devotion revives the spirit of conversion and repentance within us and contributes to the forgiveness of our sins.
vatican.va/archive/catechism/ccc_toc.htm
Saint Augustine noted in the year 395 to his catechumens to live their Baptism - but in doing so they would not live without venial sins - for life is never without such - and that daily prayer was instituted to blot them out.
Let us pray the Our Father as St. Augustine spoke of being prayed for such daily venial sins …“forgive us our trespasses…” He noted that for such sins we were given prayer - and especially noted the Lords Prayer.
Indeed in the early Church such was often prayed three times a day. A wonderful practice that my family follows.
CCC The first communities prayed the Lord’s Prayer three times a day, in place of the “Eighteen Benedictions” customary in Jewish piety.
scborromeo.org/ccc/p4s2a1.htm
That being said - frequent confession of venial sins is very recommended and very important for the spiritual life - the forgiveness via confession and absolution brings particular grace in avoiding those sins…etc etc
Catechism:
1458 Without being strictly necessary, confession of everyday faults (venial sins) is nevertheless strongly recommended by the Church.59 Indeed the regular confession of our venial sins helps us form our conscience, fight against evil tendencies, let ourselves be healed by Christ and progress in the life of the Spirit. By receiving more frequently through this sacrament the gift of the Father’s mercy, we are spurred to be merciful as he is merciful