how much is "tons of cash" ?

Yeah, that is RNG for you.

But the game has so many other fundamental problems that need addressing before the RNG can be talked about.

Money doesnt guarantee anything in lotery like game

You should never spend a lot of money on a game, especially if it doesn't guarantee anything.

I  played  the  game  for  5-  almost  6  months  without  a  legendary.

Its random, in the last 3 weeks ive opened over 100 shards and had exactly zero legendaries and 1 usable epic. The odds of decent champs are very low, by design.

My advice would be not to buy shards, the pricing is ridiculous quite frankly (£20+ for one sacred which gives a small chance of a useable champ....errrm no way).

Hope you didnt spend an amount that causes difficulties, i am sure some do.