If you want to see all of my toots that have a specific hashtag, you can just enter in your browser the url: mastodon.social/@oregano/tagged/tagname and replace the tagname with the specific hashtag (e.g for #music, type mastodon.social/@oregano/tagged/music). I often use the hashtags #learning, #petition, #music, #donate and occasionally the hashtags #news, #engineering, #traditionalmusic, #math, #BookRecommendation. I hope that you liked this tip 🙂.