For a very accurate but slightly more complex way to select an appropriate fee, read the graph here: https://jochen-hoenicke.de/queue/#BTC%20(default%20mempool),8h,weight
For a slightly less accurate but very simple way to select an appropriate fee, pick your priority from the box here: https://mempool.space/
As hosseinimr93 says, there was only one instance over the last 24 hours where the minimum fee to get included in the next block was 40 sats/vbyte. It was never anywhere near 80 sats/vbyte, and most of the time was sitting somewhere between 10-20 sats/vbyte.