No, if you get lapped by the leader, your race distance is effectively shortened by a lap. You don’t drive for an additional lap to catch up, you just cross the finish line a lap down. Naturally if you crash out you won’t be able to complete every lap either.

Basically completing every lap implies:

• a reliable car, especially considering this year’s calendar was longest ever
• clean driving without major accidents
• good pace, since the driver didn’t get lapped