Logan Sargeant admits the American’s fitness was not ‘good enough’ in his rookie F1 season but the Williams driver has ‘done everything’ he can to improve before 2024. The 23-year-old will return for a second season on the Formula 1 grid this year after showing Williams enough potential. Sargeant secured another year for the Grove squad following the final round of 2023. And the Fort Lauderdale, Florida native feels in the shape of his life now. Making the step up from Formula 2 to Formula 1 took its toll on Sargeant as he struggled to manage his fitness. But the Williams Driver Academy gradua…