from random import*
m = list()
for i in range(10):
    m.append(randint(1,10))
print(m)
for i in range(len(m)):
    if i % 2 == 0:
        print(m[i])

 for i in range(len(m)):  # ??
    if i % 2 == 0:          # ??
        print(m[i])

если for i in range(len(m)): то if m[i] % 2 == 0:

 if i % 2 == 0: то нужно for i in m: