I have 400GB in Google Photos, and I am able to use Google Takeout to download them as multiple archives. I try to back them every 1/2 years on a hard drive. S

I have 400GB in Google Photos, and I am able to use Google Takeout to download them as multiple archives. I try to back them every 1/2 years on a hard drive. Since I assume you are a Google One user. Maybe contact support and share your issue?