Depends. Some will recruit experienced freelancers with a good portfolio. Others look for graduates they can train up. Pay is not good regardless. There aren’t a lot of jobs available and they tend to be only in big cities. Jobs are declining even more with AI and services like Fiverr.
It’s digital work so companies in Yorkshire for example will still hire a graphic design agency based in London or Manchester, or even in India or China. If you’re planning to work anywhere other than a limited number of big cities, you’ll find it hard to get a job.
Companies also tend to want to hire a “one stop shop” for their graphics, website and social media. They will go to an agency who offers all of these services. As an individual freelancer it’s hard to do it all, they’re very different skill sets. In an agency the guy who draws the graphics is often not the same guy who takes the photos or programs the website code.
So you’re probably looking at a low paid job working for an agency in a limited number of big cities, or a job in a huge company which has scope to employ their own graphic designer (not a lot of these type of jobs). Or part time freelance work which is unreliable and pays very little, and you’re in competition with people in other countries who are willing to accept being paid a fiver.
You also need to be an artist. I think people under estimate this when they decide to do graphic design. It’s fundamentally an art job. Lots of people have done art degrees then a masters in graphic design.
Don’t get me wrong, I love graphic design. But it’s not a great career choice unless you’re lucky and get one of the few good jobs.