riuscissi a

could manage to

→ riuscire
phrase Rare #38,825
could manage to Subjunctive form of riuscire a, often used in wishes or hypothetical situations. It means being able to do something successfully.
IT: Se riuscissi a finire presto, verrei con te.
EN: If I could finish early, I’d come with you.

Se solo riuscissi a partecipare a quel festival, cambierebbe tutto per te.

If you could just get to that festival, everything would change for you.

— The Big Sick - Il matrimonio si può evitare... l'amore no (2017)

Se la riuscissi a spiegare, lo farei.

If I could explain it, I would.

Speravo riuscissi a rientrare questa sera.

I was hoping you could come back this evening.

— Porco Rosso (1992)

Se lo riuscissi a spiegare, lo farei.

If I could explain it, I would.