It would be better to do some research about the esports of cs-go and what maps do they prefer and what maps that they have the most upper percentage of winnings. You can check them here in
https://www.hltv.org/in which it will help you to decide what team are better right now. And I am still looking for the improvement of s1mple of Na'vi every clutch game that he is doing.
Perfect suggestion.
An additional tip is to watch highlights or replays from these players or teams that you prefer to have an idea for every match they'll have.
Also compare how your team's recent performance has been and that also can be checked from hltv.org while keep an eye on the news section because there are great news and some shocking ones for example I read there that bubzki the best player in the entire Mad Lions roster was benched after their poor team performance and a mad Lions team without Bubzki is certain to loose more matches in the future.
You can also check which maps are being picked and how heavily T or CT sided those maps are because your team might be 10-5 down after 1st map yet come on top because of the nature of the Map, for example a team getting 12-3 behind on T side on Nuke but they can easily come back with CT side.