n8n.io works pretty great for individuals and small teams, open source and self-hostable.

on that other website that i was using before lemmy, someone says that if you complain to support, they let you keep the $2 month subscription instead of $4. Although in those cases I would just cancel out of spite. They can't increase the price by 100% with just 4 days notice!

The best self hosted alt I've seen is huginn: https://github.com/huginn/huginn

It's not as easy to use as ifttt and much less already built for you but it does the same things.

Not sure if it fits the bill, but Changedetection.io works well for notifications and changes to websites. You can target feeds too but there's some xpath involved I believe.

https://github.com/dgtlmoon/changedetection.io

I use Feedpushr + Gotify.

Works pretty well, but you may find you have to set up multiple output entries and tags to filter out the useful parts of a post. That and html entries sometimes don't get parsed correctly so you'll end up with tags in what should be a parsed content string.

Besides lots of other cool stuff it can do (including monitoring for a lot of your self hosted stuff), HomeAssistsnt has the Feedreader integration, which lets you poll RSS feeds. You can then create automations to send notifications to you through the HomeAssistsnt companion app.

Feedreader defaults to polling once per hour, but you can change this in the configuration.

I'm still using Feedly after Google reader shut down, I don't pay anything

rss2exec

This might be a little more than you're asking for, but I would recommend something like Node-RED with a feedparser. Reason being: it opens up a lot of options and could be a useful tool for things other than this one use case.