What scheduled maintenance should I really be doing? (Canada)

According to the service manual I only do oil changes every 8000km and at 192,000km replace the engine coolant. No other fluids are mentioned.

This doesn't seem right to me. I plan to keep this (2024 gx, non turbo) as long as I can (probably 10-15 years).

What about the transmission fluid? Other fluids I should be replacing or keeping an eye on?