You’ve been unlucky, but not even insanely so.
50 pulls has a cumulative probability for at least one HOTM of 48% — that means that the majority of players who do 50 Summons wouldn’t be expected to get a HOTM on average.
So it’s — unfortunately — not at all surprising that you didn’t get Ranvir in those Summons.
Since you’re planning another 30 Summons, it’s worth noting that the odds are still quite low.
If 1 million players each did 80 Summons, the expected result is that 351,000 would NOT get Ranvir.
And for your upcoming planned 30 Summons, since your past Summons won’t improve your odds, you have a 32.5% cumulative probability of getting at least one of Ranvir.
So it’s OVER TWICE as likely you WON’T get Ranvir in your next 30 Summons as you getting him.
Given those low odds, I highly encourage you — and everyone else — to set and stick to a budget for Summoning.
Chasing heroes is a good way to spend a lot of money and end up frustrated if you don’t get what you wanted.
These threads can be useful to read for more information on Summoning odds: