do you feel that ethereum is very slow now? only sending ethereum with gwei 11 and gas limit 21000, in the calculator at ether gastation takes 40 seconds. However, until now (2 hours) it has not been pending, and even my previous shipment has experienced the same thing (five days still pending)
do you think it's only for a moment or did I make a mistake?
You probably used a low gas fee. Gas fees are not static. They largely depend on how busy a Blockchain Network is. You should try using the recommended fee or adjust it up a little. I guess you adjusted the current one below the recommended fee hence the slow transaction.
Use this site more to help you determine the right fee:
https://ethgasstation.info/