I broke my fibula and tibia playfighting aged 26 on Tottenham Marshes. I was drunk. I got metal inserted from under my kneecap and down to ankle, 4 screws. It took me 6 months to get back to 'normal'. 18 months later I had the metal removed as it was screwing with my mental health. I was back to 'normal' within a week after that op. I'm now 46 and have lived a full life over the last 20 years with no problems, moderate to vigorous exercise, 200k audaxes, gym, walking, climbing hills, paddle boarding etc etc
My gait is perfect and I've suffered no phantom pains or suffered in any way since. I don't know how old you are but given my experience with the NHS and similar to you but 20 years ago, give it time, heal up and you'll be amazed within a year how much has changed. Stay strong.