hello everybody

i'm planning to buy a merida reacto as my first roadbike but i'm not sure about the size.

I'm 179cm tall and my in seam is 82cm

here's my bike measurement according to android apps:



here is merida reacto geometry and sizing



my friend said it better to take 1 size smaller for a road bike. i tried to sit on size 50 bike..but i think it looks small for me. your opinion is very much appreaciated