You wouldn't. Solar sails need a handy nearby star, or a less handy giant laser.
You won't get much acceleration from distant and/or dim stars. (Without a giant laser.)
Interestingly, Oumuamua is at the high end of in-system solar sail velocities, and extremely slow for powered inter-system travel.
The velocity profile matches a natural solar sail drifting rather randomly through space or - if you're going to go with "aliens", for the lulz - a probe deployed on the outskirts of the solar system with a low velocity.
It doesn't match the profile of a powered inter-system solar sail.
You won't get much acceleration from distant and/or dim stars. (Without a giant laser.)
Interestingly, Oumuamua is at the high end of in-system solar sail velocities, and extremely slow for powered inter-system travel.
The velocity profile matches a natural solar sail drifting rather randomly through space or - if you're going to go with "aliens", for the lulz - a probe deployed on the outskirts of the solar system with a low velocity.
It doesn't match the profile of a powered inter-system solar sail.