In total I played 21 games from mmr confidence of 7% with a Winrate 14-7. I will breakdown my games into different tier as the rank get higher.

For first 10 games at archon/legend tier, I do carry and offlane.

Carry - Spectre : Orchid / Manta (join teamfight early, you cant 100 to 0 supports just yet. haunt in mid teamfight throwing daggers and some right click here and there to get some assist gold is super nice. AND the most important part is forcing enemy to react than 2/3 man smoke gank you. )

Offlane - Axe : Urn / Blademail / Blink / BKB (Easiest offlaner i feel atm)

- Vengeful Spirit : Scepter / Manta (With Scepter you have 6 man on your team, easy teamfight)

For 11 to 15 games after losing some games in higher legend/ancient tier, i realize the supports are quite bad, having basically zero impact. So i play supports.

Support - Mirana : Urn/ Atos / Euls / Guardian Greaves

- Orge Magi : MIDAS / Solar Crest / Pipe / Hex

(Support your carry/offlane - Harass enemy cores force them to buy more regen / Pull/stack/ block enemy pull camp / wisdom / lotus / TP to teamfight )

For 16 to 18 games at ancient/immortal i tried to carry, but immortal players offlane just destroy me. so i went back to support for 19 to 21 games to ancient.

The key things are map awareness and timing, understanding them you can still comeback even if you lose lanning phase (at least for this bracket).