What is the best way to maintain the gear shift in a Vauxhall Vivaro?

I have noticed that the gear shift in my Vauxhall Vivaro is getting stiff and difficult to shift. What is the best way to maintain and keep it in good working condition?

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

Inspect the gear shift linkage for any damage or wear and replace if necessary.

Keep the gear shift area clean and free of any debris, dirt, or grime to prevent buildup and make shifting smoother.

Lubricate the gear shift mechanism with a specialized gear lubricant to reduce friction and improve shifting performance.