Igave my dad a tie for father's day. le di una corbata a mi papá para el día del padre. le doy una corbata a mi papá para el día del padre. le dimos una corbata a mi papá para el día del padre. le damos una corbata a mi papá para el día del padre.

The English sentence I gave my dad a tie for Father's Day translates into le di una corbata a mi papá para el Día del Padre. So le is the indirect object pronoun for the third person singular. An Indirect Object Pronoun is a person that receives the action of a verb indirectly. Its purpose is to tell you to whom or for whom something is done. On the other hand, di is the conjugation of the verb dar that matches the first person singular in the preterite tense.

smh i have no idea tbh