Memory problem HA 2022.9.6

Lately my system has been very slow. I am running on and Raspberry Pi4 with Home Assistant 2022.9.6 Frontend version: 20220907.2 - latest. If I look at how much storage I still have, it’s 0%. So delete all backups. Provided a lot of free space. Within 1 minute of erasing, the storage was back to 100%. How/where can I see what is taking up so much space?