Okay, so let’s break it down.
**1. We believe, teach, and confess that the sole rule and standard according to which all dogmas together with [all] teachers should be estimated and judged are the prophetic and apostolic Scriptures of the Old and of the New Testament alone, as it is written Ps. 119:105: Thy Word is a lamp unto my feet and a light unto my path. And St. Paul: Though an angel from heaven preach any other gospel unto you, let him be accursed, Gal. 1:8.
“We believe, teach and confess” means doctrine. Doctrine is not set by laity, but by the Church.
“All teachers are estimated and judged…” This is actually a restriction on personal interpretation.
2] Other writings, however, of ancient or modern teachers, whatever name they bear, must not be regarded as equal to the Holy Scriptures, but all of them together be subjected to them, and should not be received otherwise or further than as witnesses, [which are to show] in what manner after the time of the apostles, and at what places, this [pure] doctrine of the prophets and apostles was preserved.
"of ancient or modern teachers, whatever name they bear, must not be regarded as equal to the Holy Scriptures, but all of them together be subjected to them,"
Another restriction on personal interpretation.
3] 2. And because directly after the times of the apostles, and even while they were still living, false teachers and heretics arose, and symbols, i. e., brief, succinct [categorical] confessions, were composed against them in the early Church, which were regarded as the unanimous, universal Christian faith and confession of the orthodox and true Church, namely, the Apostles’ Creed, the Nicene Creed, and the Athanasian Creed, we pledge ourselves to them, and hereby reject all heresies and dogmas which, contrary to them, have been introduced into the Church of God.**
“We pledge ourselves to them.” Another statement of doctrine. These are beyond personal interpretation.
“which were regarded as the unanimous, universal Christian faith and confession of the orthodox and true Church” No mention of personal interpretation here. We are bound to these as doctrine, without personal interpretation.
Sola scriptura is not synonymous with personal interpretation. Sola scriptura is the practice of using scripture as the final norm (the norm that norms but is not normed) to establish doctrine, holding doctrine accountable. Doctrine is set by the Church, not by personal interpretation.