True that winter in qatar is still not as people would expect but i don't think the temperature will be that high plus most of the players are professionals i don't think this will bother them much i think the high quality of the stadiums and infrastructure in QATAR will make them forget about it, i still think this will be the best world cup in terms of organization.
Maybe it will still affect how they play but most of the athlete that I know since they are competing outside their country, they will go to that country a month or 2 so that they can adjust to the weather and their environment especially if the country they compete is very different to their home. If I am not mistaken conditioning is their term every time they flew away so they can adjust.
It seems that it will have an effect because they are not used to the weather they often feel, and of course there will be adaptations for players so that they can still play well and also maximally.
considering it's a prestigious world cup, I think it's all set up to adapt to the cold weather so it doesn't affect it, and it's possible that the team shirt is made of cold-resistant material and has long sleeves. And maybe wear a mentset in addition.
It will be very influential, the weather is a problem for some players who are not used to their weather. Of course it will take time to adapt to the new weather.
Given that the 2022 FIFA World Cup will be held in Qatar, the weather will certainly be hotter, as Conditions The highest daily temperature rises 5°C, from 35°C to 40°C, rarely falling below 31°C or exceeding 44°C.
Players who are in a fairly cold climate will be a little hot. It is a challenge for the team shirt manufacturers to be able to reduce the heat, so they can't adapt well.
But it's not just about the shirts and how to adapt, it's also up to the field manager to make the field cooler or to be able to adjust field conditions that are suitable for all players.