You are really deluding yourself if you think anyone can reach Ramanujan levels of skill by simply trying hard enough. This takes insane innate talent in addition to trying hard.
Yeah it’s like people thinking anyone can be a Micheal Jordan or Tiger Woods if they just tried hard enough, started young enough, were born in the right place to the right parents enough. Some people just have the gift, it’s like neural networks: some random weight initialisations are just better, some maybe even so close to optimum that almost no training is needed at all.
Ramanujan was extra-terrestrial. His note books have produced so many papers and PhD theses. Probably will continue to do so for many more years.