RSS is one way, ActivityPub two. If your blog makes articles available to ActivityPub, then people can e.g. comment directly on the blog post without having to post a link to it, and others can follow those posts.
If you don't like Mastodon, there's Pleroma, Misskey, Calkey and others, as well as apps, or you can find RSS feeds from them if you just want to read, or you can use one of the alternate web frontends.
Mastodon RSS feeds are also crap. None of the posts have any kind of a header, so it's not possible to see what the post is about without opening the post. Real blogs will actually have titles that describe their contents.
If you don't like Mastodon, there's Pleroma, Misskey, Calkey and others, as well as apps, or you can find RSS feeds from them if you just want to read, or you can use one of the alternate web frontends.