I used [these curtain rods](Sun Zero Bronn Wrap Around Window... https://www.amazon.com/dp/B07DSGHB45?ref=ppx_pop_mob_ap_share) that wrap the curtains all the way around the window, they’re amazing!

And I bought [these curtains ](RYB HOME Acoustic Curtains... https://www.amazon.com/dp/B08MVK6SD6?ref=ppx_pop_mob_ap_share) completely blackout, with the added bonus of sound dampening as well.

My office/guest room is literally a black hole with this combo, plus it totally reduced how loud our neighbor’s big dog’s barking sounds in the room.