For those who had covid symtoms for some time, how did you get back in shape to run?

Long story short, I had a bad case of COVID back in 2022. Ever since then, I've been dealing with long COVID symptoms, from extreme tiredness to muscle spams, difficulty breathing, and developing new allergies. Now I'm feeling much better.

For those who got back to running after having long COVID, what was your exercise routine to get back in shape? I used to run up to 20km before COVID. I know it will take a long time to get back into shape, if ever, but I at least want to start running 5km regularly.