Hello, sorry to hear you are having issues.
First can you try to verify the integrity of your FM files, as shown here - https://support.sega.com/hc/en-gb/articles/9997753543185
If that doesn't work, try removing your cache and preferences folder as shown here - https://support.sega.com/hc/en-gb/articles/9997644231185
If the game is still crashing, could you please send us your DxDiag as shown here - https://support.sega.com/hc/en-gb/articles/9997195057553 and any crash dump files (which can be found here by default - C:\Users\Your Windows Username\Documents\Sports Interactive\[Football Manager title]\crash dumps) so we can access and see if you are able to run the game. Thank you.