Set up the same featured image size (automatically crop when uploading)?

Hello,

I want all my featured images to be in the same 1:1 ratio format by default without having to crop the image before uploading.

Is there a way to do it?

I saw recommended Simple Image Size plugin but it hasn’t been updated for the last 3 years and I have had a bad experience with not updated plugins (malware!) so don’t want to go this way.

I thought that Settings -> Media and set thumbnail to 1:1 would do it, but not…

Is there a way how to set it up, or how can I target featured images by CSS, please?

Thanks