How to improve my favicon

When i add an icon to the app, it becomes the favicon of the site.

If the background of the favicon**.png** is transparent/clear, it’s displayed at most browsers with a cloudy blue background, if it’s black, then there’s an square frame out of the round favicon.

I would like to be able to use a favicon like the following ones marked in green:
2024-10-20_21h31_55

How to do it, if possible, with glide?