Lincoln wanted to send the freed slaves back to Africa. He wasn’t as good of a guy as history class made him out to be.
You cannot simply apply modern ethics to the views and actions of people in the past like that. Nuance is required. Our thinking as a society changes over time, and our views as individuals are inherently constrained by what we experience and learn, and by the views of those around us.
For his time, Lincoln was progressive. He was an abolitionist who brought about the end of US chattel slavery.