How do I extend the amount of frames on a 2d animation? I need to extend the amount of frames on the timeline, as you can see in the picture it ends around 1020 frames in the png. I havent tried anything yet to fix it myself but I was wondering if there was a way to go about fixing it before I do any unrepairable damage to the file. Thanks in advance
You can change the number of frames for the project if you type it at the bottom right of the timeline window.

Note that you've enabled an alternative preview range, that is different than the project's frame range.


Preview Range(clock icon)
This is a temporary frame range used for previewing a smaller part of the full range. The preview range only affects the viewport, not the rendered output.

Read:
https://docs.blender.org/manual/en/latest/editors/timeline.html?highlight=preview%20range