I realize you're a very negative person in general, but you really should try to get a better outlook on things. Let's look at what you're saying here and put it in perspective:
First - 8 out of 100+ players catch the virus over the course of the season. Totally reasonable prediction and fairly likely if we do have a season.
Second - 5/8 players have long term serious health effects. Highly unlikely. According to CDC data, approximately 3% of people between age 20 and 29 who are infected with Covid require hospitalization.
https://data.cdc.gov/Case-Surveillance/COVID-19-Case-Surveillance-Public-Use-Data/vbim-akqf It also seems that long term health impacts are rare. It's unlikely that any football players would have long term health effects. They may have some lingering effects, but unlikely that they will be serious or longer term than a month or two. Not impossible, but very unlikely.
https://www.sltrib.com/news/2020/07/12/what-we-know-about-long/
Third - A player talking to his parents on the field is likely to give them the virus and end up killing them both. Highly unlikely for several reasons. First, there's no scenario where the players are able to play in a game without having been tested that day. So, there's no meaningful chance of a player getting infected and becoming contagious during a single day, then passing that sickness on to his parents. Second, even if a player were to be infected with the virus and slip through the cracks of testing protocols, additional measures are going to be in place. Social distancing will be required and there's no chance players will be able to talk to people after a game without wearing masks, etc. This is part of the official game, they're "on the clock" until the end of post game interviews. They have to follow the rules.
Fourth - A player may infect a coach. Possible. Again, if they're going to play they have to have rules in place. The coaches will have to keep their distance. Granted, I've never played a game of organized football in my life, but I imagine you can coach from 6 feet away or farther if need be. It's also unlikely that even if a player does infect a coach that the coach will die or have long term serious health effects. If a coach is in a high risk category, the program needs to provide special protection for that coach.
Just assume some common sense, good faith, precautions being taken here. Don't assume that 5 worst case scenarios will all happen at once. Some people will get sick. You add up the numbers of total players, coaches and staff across the P5 and there's a chance that a few may have serious health effects or even die. But the chance is not significantly higher than just living a normal life, so long as people are taking common sense precautions.