How to edit a wordpress plugin so that it doesn't crash after the next update?

Question

WordPress

There is a plugin responsible for displaying posts. I made some changes to the corresponding file regarding the display of posts.
That's just after updating the plugin - it overwrites this file and my adjustments are replaced with standard ones. How to properly approach this moment so that the adjustments remain?

Answer 1

Something tells me that pre_get_posts is used there. if so, try to get hooked there, and don't touch the plugin at all. Or if there is just a custom query like WP_Query, then you need to think deeper.
Can you post a piece of code for this plugin?

Answer 2

Create a custom theme and copy the modified plugin files into it. No tricks are needed here.