If you're using a Mac, there are a few different ways that you can make gifs smaller in kb without losing quality.
Make gif smaller without losing quality on a Mac
One way is to use the Preview app that comes pre-installed on all Mac computers.
To do this, open up your gif in Preview and click on the File menu at the top of the screen.
Then, select Export. In the new window that pops up, select Reduce File Size from the Quartz Filter drop-down menu.
You can also choose to export your gif as a different file format, like JPEG or PNG, which can also help reduce file size.
Once you've made your selection, click on the Save button and wait for the gif to export.