Just to add another perspective - During the 92-93 Premiership under Ferguson, right at the start we lost to Sheffield Wednesday 1-2 and then lost again to Everton 0-3. The next game we drew 1-1 to Ipswich Town. Should we have sacked Ferguson then? Bear in mind, we won that season in the end.
There's a lot of work to be done, for sure but calling for the head of the manager after 3 games is premature. The recent results are bad but not insurmountable. We, as supporters, have a role to play as well. We need to back the club, especially now. Give them the support to get over this bump on the road, the players, the club need the head-space to get out of this hole. Adding more pressure and chaos is not going to help.
We are in a better position than United were during the start 92-93. They only had 1 single point from the first 3 games and they managed to go on from there and achieve their goals. Maybe that should be something we should aspire to than throwing in the towel quickly. We cannot criticise the players for dropping their shoulders when we, as fans, do that all the time.