Tool - RSSHub
RSSHub is an open source, easy to use, and extensible RSS feed aggregator, it’s capable of generating RSS feeds from pretty much everything.
For example, to subscribe to a twitter feed of a favorite username, try this URL - https://rsshub.app/twitter/user/pavanyara_ - to get timeline.
Since this is open source, you can also self deploy in your VPS or use as a NPM package.