Seconding this. If you have a PiAware setup or other off the shelf ADS-B tracker, it's super easy to add feeding to ADS-B Exchange. https://www.adsbexchange.com/how-to-feed/#scriptmethod
Now anyone can subscribe to 360radar, but it is limited to the UK and a small part of northern Europe. It's not the cheapest service, but if you're an aviation photographer in the UK it and its linked community are a key resource.