The Hammers started their Premier League campaign in the worst possible fashion, falling to a 4-0 loss away to Liverpool on Sunday afternoon.
"I know a lot of people think that because we were active in the transfer window, but that is part of the business, it doesn't decide anything", added the German ahead of Sunday's opener at home to West Ham.
He will certainly have more hard games than this, but this was an encouraging start for the 23-year-old.
Liverpool took their bright pre-season form into the new Premier League year but Klopp knows there is still room for improvement for the rest of the season.
West Ham offered little as their five debutants struggled to gel and Daniel Sturridge rubbed salt in their wounds late on when he knocked home from a corner within seconds of appearing as a substitute.
If their fortunes improve as much as the squad has then the pre-season title-challenge optimism may well be justified.
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Such reasons are why Liverpool are tipped at being Manchester City's closest competitors.
"A very good start, for sure", Klopp said at his postmatch news conference.
Shortly after the break, the Reds extended their lead as Mane bagged his second with neat turn and finish to make it 3-0, although replays suggest he was offside.
Liverpool's Egyptian midfielder Mohamed Salah (L) vies with West Ham United's French defender Arthur Masuaku during the English Premier League football match between Liverpool and West Ham United at Anfield in Liverpool, north west England on August 12, 2018.
Liverpool came out of the gate firing as would be expected by such an energetic and attacking team, with James Milner in particular swining in some risky crosses that Liverpool's attacking players weren't quite able to get on the end of. But after reaching the Champions League final in May and spending more than anyone else in the Premier League in the off-season, there is palpable belief that wait will come to an end in May. "Let's go for it until we have no more air or oxygen, really go for it".
Replays showed that Mane was offside - a rare referee mistake in Liverpool's favour which would ultimately make no difference to the result. Yes, it's a start - flawless as well because we won the game.
Okay, the Brazilian did not score an own goal before being sent off and did at least manage 62 minutes, but such was the impact of his first-half display that he may as well have spent much of it in the dressing-room. The match ended up being one sided as Liverpool scored four with Naby Keita in particular playing a very crucial role in Liverpool's setup.