How do I be a good support?

So I just played a game as thresh with 2 pairs of duos & 1 dc w/ a draven adc who along with his duo jungler spam pinged me to do something. I'm new to thresh and can't do fancy flash hooks let alone hit a regular one especially not against a poke lane (ashe, sona) with an adc that isn't playing hyperaggressive (playing up & autoattacking enemy adc) which surprisingly makes it hard to hit skillshots w/o the pressure. As you can already tell, I just sit there & leech xp bc i have no idea how to make them plays I'm told I should get mobs and gank other lanes when the adc spam pings me to go away . What would be the best way to go about this? Would starting a new account to learn in a more positive environment help?
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