It will be similar to the A7iii, use the Memory Preset dial, for your video settings.
If you only want one preset to start with just turn it to video mode which will hold it how you had it set last time.
You might want one set up for 4K giving max resolution and cropping options and the second one at 1080p with higher FPS so you can slow it down in post.
Picture Profiles come into play for video and over-ride any creative styles set.
When learning they are a bit of a minefield though you would probably be best leaving it on standard or natural.
Your exact options I'm not sure of but recent Sonys are generally similar
To switch back to photo you can simply turn the dial to M A or S and how you last used it will still be the same there - effectively another preset.
You can let it decide most of the settings itself but typically I record 1080p at 50FPS and 1/100th shutter.
I leave ISO on Auto a lot of the time and only particularly adjust the aperture for the desired effect and/or to avoid warnings of under/over exposure on the EV meter