According to the study done by MEV bots, The usage of bots has packed the transactions in such a way that the bot could earn financially from them, and then transmitted them privately to a group of miners who mined them.The bounty here address the bots that have been used in the month of January such that it counts the transactions done by the wallet which has used bots to swap them.

The chart here shows the transactions done in Uniswap by the wallets where 300 or more transactions done are considered as to be done by the usage of bots in the platform.

The pie diagram displays the percentage of the transactions that are done using bots by the wallets where the count exceeded 300 in number in a month.The wallets that have made the transactions are also addressed here.

Over time the wallet that had used bots to swap the most is 0x29417d1823b63a504ce8ef05e194885d07e4fd1f.

Conslusion

The prime reason for this is The Uniswap V2 Router contract which turns out to have implicit assumptions that aren't explicitly specified in the contract. As a result, unless certain assumptions are stated, slippage control for some Uniswap V2 deals may not be verified or taken into consideration at all in some cases.