I've been using Google Photos to store all my photos since 2011. The thought of losing everything gives me chills. Only recently I did a first backup of the files via Google Takeout.
How many dozens of stories like this do you need to read before realizing that you always need a local copy of everything valuable you store in the cloud?
The problem with Google takeout is that if you haveany photos, let's say 300gb like myself, you end up having to manually download 50 or so files. This could be easily avoided if photos where synced to a pc like before, unsig Google drive.
You can ask for larger zip files. The maximum is 50GB. It uses zip64 which most modern systems should support. So still 6 files in your case, but at least not 50.