Why split a large swap into several trades?
First, what it is: The quote provided by an aggregator is only an estimate; the final trade is still affected by your slippage settings and changes in on-chain conditions.
Why do this: Splitting an order also has a cost: each additional pool uses more gas, and for smaller amounts, the savings from a better price may not outweigh the extra gas.
When swapping on Ethereum using an aggregator, pay gas with $ETH ; $1INCH is 1inch's governance token.
Try to invest only money you can afford to lose without affecting your daily life.