The breakpoints selection seem not bad, the only problem is the breakpoint 992px > 1060px that explodes the menu, and when < 992px the "beta" floats wrongly.
I would fix the "beta" and remove the first breakpoint to just use the hamburger menu.
Bonus: when the haburger menu is open I would central align the items and put a bottom padding to isolate the signup/login buttons from the background content.
Btw really nice website! 🤙