1 peter 3:7 shows how Roman laws affected the perception of the Bible writers just he same as regular people. Nowhere else in the Bible does it say that women are weaker, only there.
The Romans didn't believe women were physically capable of gymnastics and sports, so they generally didn't allow it. Just like they thought women and girls weren't able for an education like men, their 'weaker' referred to mental weakness as well as physical.
Bible writers were not immune to sexist beliefs held by their culture of the day.
In the 21st century we know better, women live longer than men, that's physical and mental strength, just for starters.
We need to stop quoting verses that are downright wrong as truth, look at the cultural setting of the Bible writers, dig into their laws and customs, to understand why they said certain things. Not everything written down came from God.