There is a bishop in Argentina, who was validly ordained in the pre 1972 rite of ordination, who is in submission to His Holiness Boniface X. He could be used for the sacrament of penance.

Otherwise, you would have to approach Boniface X directly, and request that he remit your sins, as the Roman Pontiffs did for all those who fought in the crusades, and confessed their sins on the battlefield without a priest available.

See Boniface X's Apostolic Constitution regarding this here:

[link to www.romancatholicism.net]

Yes, it is very difficult in this time to be saved, God has taken away His graces from the land, even as He oft did in Old Testament times when he allowed heathen to snatch way the sons of Aaron.