approximately 10% of the world population is left-handed, but if we look at the professional tennis, current top 100 has 15 lefties:

2 Rafael Nadal

16 Denis Shapovalov

35 Guido Pella

38 Adrian Mannarino

41 Albert Ramos-Vinolas

42 Ugo Humbert

48 Yoshihito Nishioka

52 Fernando Verdasco

56 Feliciano Lopez

65 Jiri Vesely

75 Corentin Moutet

77 Cameron Norrie

78 Federico Delbonis

92 Dominik Koepfer

top 100-200 has 12 lefties, top 200-300 has 11 lefties

and we have ATG lefties like Martina Navratilova, Rafael Nadal (plays lefties), Rod Laver, John McEnroe, Jimmy Connors, Monica Seles...Obviously we don't have the exact data to prove the theory, but just in theory, do you think lefties have a better chance? Or Not?