@OatmealB0wlThere is no "complexity" in tyre usage in F2.. And its still bad in the game as you have no free choice when to run a certain tyre or how much fuel you want to have on board..
Races are always a one stop and only a late safety car CAN cause a 2nd stop for options, otherwise always the same with the AI.. Online a bit more variety possible as players can choose differently, varying the starting tyre..
To answer your direct question: Tyre allocation is "fine" for F2. You get the same tyres for the race as real F2.. F2 in general is very busted for single player though