In that case, I would recommend mid lane then.
Usually, supports are macro players and focus on creating team pressure by teamfight presence with initiation or peel, creating picks while roaming, or providing information via ward coverage and denial. Sometimes you see supports that function as a damage threat, and those can be very powerful in the right situations.
If you feel you can have more influence by being in a solo lane rather than a duo lane, I would say that mid may be the best option based on your play-style. You claim to prefer aggressive/poke style characters. If you are able to snowball an aggressive lead in mid lane, you can roam and provide pressure to your side lanes or even follow-up with your jungler during invades. Also, mid lane is shorter, so poke allows you to easily siege with the ability to retreat if necessary.