Helped you to translate it to english..

In game no. 5 the time had come when the Tampa Bay Lightnings beat the Montreal Canadians 1-0 in front of their home crowd and won the series 4-1

The Bolts were able to successfully defend their title, overall it is the 3rd Stanley Cup that they have won and the success was more than deserved.
They were the best team over the entire playoffs, even if they brought the New York Islanders to the brink of defeat with clever tactics and full commitment.
In addition, with Andrei Vasilevski they had an outstanding goalkeeper who you need to win the cup and who, for example. Las Vegas was missing in the crucial moments.

Despite the defeat in the final, it was an excellent season for Montreal in which no one had expected that they could advance to the final.
Goali Carey Price had a big part in it, too, but that wasn't enough in the final, Tampa was just too good.

I don't want to go into the much discussed fact that Tampa Bay exorbitantly exceeded the cap space limit (unfortunately legally) with the return (after an injury) of top scorer Kucherov in the playoffs, everyone can see it as they want.
Personally, I would like the NHL to find a rule here so that something like this is no longer possible to that extent.

Small note in the margin.
Striker Patrick Maroon won after 2019 with the St. Louis Blues and now with Tampa 2020/2021, the third title in a row, not many have achieved that either.

In any case, the Tampa Bay Lightnings are a worthy Stanley Cup winner in 2021 and it will be interesting to see if they will make the triple next season.

I wish all hockey fans a nice and relaxing summer break.