10 Seconds of fast cloud movement | x120 footage | Google Pixel 6 Time Lapse Feature

Capturing Time Lapse for high speed footage is delicate and time consuming, you'll need something to keep you occupied (ideal if your working or fishing for example) so the longer your away from the device - the longer your footage will be! You'll need something stable for your device too, somewhere it won't move or capture something or someone else moving in front of the camera (just as my second attempt herein shows a forklift truck operating lol!)
Hopefully now I've got the gist of it, there may be better opportunities to try again in the coming months (perhaps weeks) and the ultimate goal is to achieve a weather video, a storm building up for example!