'Do' and 'does' are both forms of the existing indefinite tense in the verb 'to try and do.' Which a person you may use will mainly depend on the sentence's issue. Their usage is almost equivalent, apart from 1 instance where You may use 'do' rather than 'does.' Cloning: https://financefeeds.com/top-altcoin-to-buy-now-how-spacepay-is-changing-the-way-we-pay-with-copyright/