I have already explained what the Holy Door symbolizes, it is a Door to Saint Peters. The Door/gate and opening it is a visible reminder for all to open the door to Christ [John 10:37] was read at the Liturgical ceremony when Pope Francis opened the door to Saint Peters on Christmas eve.
The Church is where Christ makes Himself and means of His Grace fully available in the Sacraments, i.e. visible signs of God’s Grace [yes I know your view of sacraments is different].
So one is called in a jubilee year to 1st go back to confession and ask forgiveness for sins committed, then work on reconciliation in proper order, family members that we have had a fallen out, friends and others at the local parish, and pursue reconciliation with fellow Catholics and then take that and work for peace and reconciliation with others.
The article above gives a pretty quick and clear concise of what the Jubilee year 2025 is about. Not saying you agree with it, but at least you will see what it actually is, not some caricature per what we have read in many posts in this thread already.
Wasn’t/isn’t the shed blood of Christ sufficient to cleanse us of all sins??