Why are you concerned about tight European games when we got all the way to the Champions League Final last year?
If you are referring to that one game in the season I seem to remember that the popular theory at the time was that the problem was that we played without a holding midfielder for the first time in the season.
This idea that we lost because we were lacking a striker is a recent revision in order to lambast the people that have that brought us a squad that won 3 of the last 4 premier league titles, took us within a game of the Champions League and won a record equalling 4th consecutive League Cup and has won more than any other English club in the last few years.
It is quite sad to see that sections of our fan base are already as entitled and arrogant as those the 'istree clubs.
Personally I'm agree we shouldn't be lambasting anyone because I think it's very hard to get the right player.
That said, it's not just the CL final I'd be referring to when I say a target striker would be a game changer in big games for us. We keep losing 1-0 to top teams because they've figured out that they can stop us scoring by defending deep and packing the box. Burnley can't pull it off but the better players at United, Chelsea, Spurs, Leicester are a different proposition. I think we'll see a few results like that again this season where the option to hit Ronaldo, Kane, Haaland in the box would have seen us break the block.