If you are experiencing the error "The transaction cannot succeed due to error: PancakeRouter INSUFFICIENT_OUTPUT_AMOUNT" on Pancake Swap, then you can increase the slippage amount up every few % until the transaction goes through.

You can change the slippage by selecting the cog icon and then the custom slippage amount.

Its not a rule of thumb, but starting from 2% and then going to 4%, 6% and upwards until it goes through on Pancake Swap.