[zamadatix]

https://www.youtube.com/feed/subscriptions is your subscription feed, you can get there by clicking "subscriptions" in the left pane.

The feed on the home page is recommendations. That may, by chance, include things you're subscribed to but it will also include other recommended content and possibly not recommend things you are subscribed to as it's not meant to be a second copy of the subscription feed.

[squeaky-clean]

That still doesn't give reliable recommendations of your subscribed channels, it's just a chronological list of their new content.

If I subscribe to a youtuber with a back-catalog of several years of videos, I want recommendations of those prior videos, not only their brand new ones.