The question as reads: Maharashtra gave the foremost freedom fighters. it's a false assumption.
The idea that “my state contributed most to Indian freedom struggle” could be a false notion held by many Indians, thanks to the way your school books are structured to convey more importance to your own state. Punjabis, Bengalis, Malayalee's, Tamils and lots of other Indians suffer from such false superiority.
Of Gandhi, Nehru, Patel, Bose — which one was a Marathi?
After the 1910s, the participation of Marathis in national politics dropped significantly. The Chitpavan Brahmins accustomed be play a vital role at the national level — Gokhale, Tilak, Ranade — etc, but within the next few decades many of the Chitpavans went within the Hindu Mahasabha route — Savarkar, Godse — and lost importance within the political table. there have been only some on the opposite side like Vinoba Bhave.
The participation of non-Chitpavan Marathis at a national scale was quite limited, with the only exception being Ambedkar.
Since Savarkar, Ambedkar and their followers didn’t belong to mainstream politics, that they had little influence within the Parliament. Congress movement mostly skipped them and BJP did that too — with both of them shifting their key base to UP after ranging from elsewhere.
Also, like within the case of the Andhra people, plenty of Marathi political energy within the early decades of independence went in securing a separate state for themselves to return out of Tamil and Gujarati domination of their collective provinces respectively. That didn’t allow them to group their energy to specialize in national priorities.
There is also plenty of victim mindset that's present in some Marathis that was channelised by Thackeray and Shiv Sena to search out fictional enemies in immigrant Biharis, Tamils etc. it's hard to play a key positive role at the broader level while nursing victim attitudes and keeping a paranoid notion that everybody was bent on get them. Andhra people again suffered from the identical attitudes over the decades and recently Tamils have also joined within the paranoia - that's the kryptonite keeping from influencing bigger.