What is the best way to maintain the transmission of a Vauxhall Astra?

I recently bought a Vauxhall Astra and I want to make sure that the transmission stays in good condition for as long as possible. What steps can I take to maintain the transmission and prevent any potential issues?

Regularly check and change the transmission fluid according to the manufacturer's recommendations.

Avoid accelerating too quickly or shifting gears too abruptly.

Have a professional mechanic inspect the transmission regularly, especially if you notice any unusual noises or difficulty shifting.