Here is a list I have formed:
-Switch to Esim
-Build more apartments
-Use shampoo/conditioner bars
-Put carbon labels on products
-Buy stuff at the store
-Eat plant based
-Prioritize transit over cars
-Switch to Ecosia
-Recycle
-Give homemade gifts
-Compost
-Be organized
-Avoid synthetic cloths
-Switch to green burials
-Buy reputable carbon credits
-Mandate microfibre filters for washing machines
-Install Linux on old computers
-Switch to Electric car -Shut down all oil operations
-Pickup litter
-Ride your bicycle instead of the car
-Adopt kids and companions instead
-Build more green spaces
-Convert animal agriculture land to wild lands
-Support repairability
-Ban private jets
Not sure what you are suggesting the better alternative would be? Scrap it? Whoever purchased the used vehicle could have bought a new car instead (which would have required more raw materials for processing).
One common issue I noticed among environmentalists is they argue with each other about what the perfect solution should be instead of just starting somewhere. Any progress is better than nothing at the rate the climate is changing and such progress tends to compound over time.
The same as with any gadget: use it until it’s broken beyond repair.
That’s why I like subbing to old phone communities as everyone gives each-other support in breathing in new life to their old gadgets.