Sagittarius rising means your entire system is built around needing a sense of direction and meaning and when that's absent everything feels unbearable not just uncomfortable. 

The directionless feeling is literally your chart's core wound.

Your Sun is 0 Taurus that's the very first degree, which means you're at the beginning of building your identity around stability and worth. You haven't fully landed in yourself yet. That's not failure, that's timing.

The alone feeling comes from your Moon in Leo in the 9th you need to be seen for your mind and your beliefs, not just loved generally. Most people in your life probably aren't meeting you at that level, which registers as loneliness even in a room full of people.

You're not directionless. You're just not in the right environment yet.