Not everything has to be competitive or official either. Like you can just go to the community pool during the summer without joining a swim team. I think some parents forget this, but this was normal for previous generations.
So my kid has a few extra curricular activities and then I also do plenty of activities with them at the house like play chess or card games or whatever. They're also watching some of my old favorite sci-fi shows with me. Nearly all of YouTube kids is steaming garbage designed to turn your kid into a mindless consumer. Netflix kids is pretty good though. There are a lot of shows that have character progression and multi season plot arcs that cover complex subjects. Avatar the Last Airbender is an example of a show I was comfortable with my 7 year old watching without worrying about brain rot. Mind you, I think all screen time needs a limit.