Everything that goes up, comes down. The market is in constant motion, take advantage of the drop to strengthen the rise. #HODL

Hello ..
Could someone please tell me why the total amount in my account is decreasing every day? I had more than 140 USDT, distributed across different cryptocurrencies.
As of today, I only have 137.
All my cryptocurrencies are in Earn.
I do not invest in futures because I do not have knowledge.

Please help me stop this decrease in my capital.