@Castlenette Welcome! It will take some time for you to curate enough followers to fill your feed. For me it was about 300 or so, and I still don't have too many...
Great job using hashtags. Mastodon (and the larger Fediverse) relies on these rather than content driving algorithms. You can add them to your bio for visibility as well. You can also 'follow' hashtags of your interests to help fill your feed.