use linux is this platform of any help to you if i tell you what graphical editing features it has to offer.
Would you kindly upload one of the two images please so we can see complexity of the image and establish level of work/skill required to remove the background and unwanted text please.
This will enable freelancers to place a relevant bid if they are interested.
Also, would be helpful if you could state your budget range rather than ' not specified'.
Keep in mind that you have more chances to win a Job with Case Study as fewer Sellers will send a proposal. Moreover the Buyer has already paid a fee for it, which shows that they seriously intend to award the Job.