"We are frustrated and sad to have dropped two points in a match where we did enough to get all three," he said after the game.
"But this is football and goals are all that matter.
"We have to keep improving," he insisted.
Suarez's strike was Celta's only attempt on goal, something that Lopetegui also touched on.
"Against a very good team, with good players, we have managed to minimise their threat.
"They had one chance and we had many chances to score but we must continue.
"We had the chance to get the three points with some clarity," he fumed.
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!