'Do' and 'does' are both equally forms with the present indefinite tense with the verb 'to try and do.' Which one you'll use will largely depend upon the sentence's subject. Their use is sort of similar, apart from a person instance where You can utilize 'do' and never 'does.' https://financefeeds.com/scott-bessent-backs-t-bill-backed-stablecoins-as-u-s-moves-closer-to-stablecoin-regulation/