The preposition at is completely unnecessary here. It had no business being in the sentence at all. Simply get rid of it and move on.
https://www.shmoop.com/grammar/prepositions/ending-a-sentence-in-a-preposition.html
Please explain to me the use of "being" here?
is "had" a main verb?
Jigneshbharati is "had" a main verb? Yes. It is not an auxiliary verb there.
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Jigneshbharatiis "had" a main verb?
Yes. It is not an auxiliary verb there.
JigneshbharatiPlease explain to me the use of "being" here?
Still working on "being" I see.