MacBook Pro - 2019

Everything you have described shows me the laptop is working as it should.

Technically when things get hot it puts stress on the components and will technically cause them to wear faster than when running at lower temperatures, but your laptop has multiple safety protections built-in to keep the laptop running within acceptable thermal limits. How much will it shorten its life is unknown, but I don't think you have anything to worry about. You really should not worry about it. Use your laptop as you see fit. An unused laptop is a waste.

Keep in mind when the CPU is running at 100% utilization it will cause the battery to drain quickly. Even if the laptop's charger is being used the battery may not charge or if it does charge it will be charging extremely slowly since all (or most) of the power from the charger is going to power the laptop to keep it running at full speed. When you are running the CPU at 100% and the fans are also running at top speed you may see the laptop stutter & lag as the CPU is being throttled in order to lower its temperature (the CPU goes from running as fast as it can down to a slow idle so you will notice a difference in some situations especially gaming).

Booting into another OS will not hurt your laptop either. Many users run multiple operating systems on a Mac.

Just enjoy your laptop.

Heat is always bad, but recent Macs will lower the CPU frequency to cool the CPU once the fans are unable to keep the system temperatures below a critical level. If you don't notice any performance issues with FIFA, then the cooling system has not been overloaded. You would definitely notice if the CPU has become throttled since the CPU speed will drop from about 3GHz to 800MHz. At the very least you would see some stuttering in the game if this happened.