Well, I think there are no easy answers because "easier" software is often just easier because it has fewer vital functions and actually makes the process of both restoring and learning slower and less productive. I know it has been a year, but still, I think you can find a lot of useful information about how to do it in this article about how photo restoration work.They use mainly 2 tools to make restore their photos:1. Photoshop or its free analog called Photopea2. Gimp
If you don’t want to use any of these Photolab can be an option, but I don’t this it will be as good as PS or Photopea
I'd stay with a free tool that can be acessed from the browser, rather than paying $20 per month per Adobe Creative Cloud
