That's what is said. The world is a big place; no one can speak correctly about each and every person on the planet.
No that's not enough. A murder who acknowledges God as the only savior is still a murderer.
Ezekiel 18 defines the righteous. It includes person to person code of conduct combined with ongoing commitment and implementation of the religious laws given by the LORD.
Who are the righteous remnant? They are scattered in Jewish communities of the various denominations world wide.
Not even close.
What I'm saying is Paul's magic trick in Galatians 3 is smoke and mirrors. He is leading Jews astray, putting stumbling blocks in front of the blind. He is officially off-course on a highway to hell.
I'm also saying that the verses in scripture that require a Jewish person to do
all the commandments, statutes, precepts, etc, are real-life instructions that require "care".
Finally, for me personally, like Paul I go back to before the law was given to Moses. For me I go back to the story of Cain. The promise made to Cain might be valid for me too. My effort might be accepted. If so, God will be my savior. No Jesus needed.