System Data is using 150 GB in iMac storage

Hello, right now system data is taking up over 150 GB of space on my computer. Out of the 150GB, 32GB is in Biome under Library, 77GB is in CloudStorage and 24 is in Containers. Is there anything i can do to reduce these amounts. Within Cloud storage i can see that it is showing google drive which has already been uninstalled form the computer in an effort to get rid of the folder. I have seen that manually deleting it in Library may delete the files even from online which i don't understand. Please help!