Sony A7 IV stabilizer and lens in kit: I look for info

[TheHunter]

Hello everyone, I hope someone who owns the Sony A7 IV can answer me objectively. I only make documentaries in 4K around the world and I don't take photos. I never use the tripod and everything is freehand. I would like to know if the Sony A7 IV has a good stabilizer to be able to do this. I am selling from a GH5 that has an unbeatable stabilizer.

Then, the zoom lens that comes with the Sony Alpha 7 IV as a kit, does it work well? I mean the FE 28-70mm F3.5-5.6 OSS.

1000 thanks for your kind info.