How can you evolve Pokemon that require to trading without actually trading them?

Question

If there is a way to evolve Pokemon without trading them in Ultra Sun, please put an answer.

Comments

I don't think that's possible. If trading is the only method for a specific pokemon to evolve then you have to trade it

Answer 1

If you need to trade a Pokemon to evolve it, then that's what you have to do. No workarounds.