it keeps saying that im using all the 128mb but when i check my bot system command it says im only using about 30mb
The 30ish MB your using according to the image above is memory (RAM) in this case not drive space. Bots can definitely fill up the allowed space pretty quickly as some have quite a few requirements. You can check how much space is used via the console but
df might not be accurate though. There are a couple tips about freeing space on that link too if you want to try those (may want to try on a remix copy of the bot just in case).