The lightroom trial is free and would give you the time to do what you need today, but it’s only $10 a month for both Lightroom and Photoshop along with 20gigs of storage and a free website to show your work. It’s priced so low that people don’t bother really pirating it anymore.

If you are really struggling financially then try the GIMP and RawTherapee. They are free and you can do a lot of things with them.

Don’t steal software. It’s not worth the risk to your computer and data.