We often, by default, think “lets make this better”.
Sometimes, simply the fact that it works is ok.
In fact, if you try and make something better, when it already works, you risk breaking it.
This doesnt mean you should never try to improve things. But do try and calculate how much* better you may make it, how much* you may break it, and how much* you it might cost to fix it.
* How much doesnt just mean money. It can also mean time, effort, trust, prestige, frustration….