My limited experience beginning with having never having been in any gym, ever, until my 40s:

Most adults that are regularly working out in the gym judge the beginners as courageous. They want to teach and encourage them. But, social norms won’t let them until solicited. If a beginner has also the courage to communicate sincerely then they’re likely to find both physiological and psychological support for their personal goals.

This is generally true for most things. Create the opportunity and almost everyone will teach and love as is practical for them.

There’s the “right” way and then there’s what’s practical. Here’s the “right” way:

Rough sand the entire floor to wood. Fill the voids with Starbond CA glue of the appropriate color, low viscosity for leveling. Fine sand the entire floor. Refinish with oil-based polyurathane.

If you know what you’re doing then this will take three days, most of it dry time. If you don’t know what you’re doing then one way or another you’ll destroy the floor during rough sanding.