It is possible that our current understanding of time and space may be incomplete or flawed. I don't completely disagree with that.

As far as Newton and Einstein part, let me explain what I meant.

Newton's theory worked well for predicting things on Earth and nearby planets, but it couldn't explain the movements of faraway planets including Mercury. Einstein's theory of relativity built on Newton's ideas and solved these problems.

However, for gravity on Earth and nearby objects, Einstein's equations are similar to Newton's,

so Newton's work still holds up in those cases. So, Newton wasn't completely wrong, but Einstein improved upon his work.

But Einstein theory also have limitations, it seems like that's black hole. So someone may expand on that later, that wouldn't make Einstein wrong but it will expand our scientific scope of observation.