If you're in the bronze league; you shouldn't worry about build-orders or timings, at all. You should just focus on constantly maintaining and being on-top of your macro, that is (from a Protoss P.O.V.); constantly creating probes out of your nexuses, constantly using chronoboost on appropriate structures, always producing out of your unit producing structures, keeping your warp-gates ('w' hot-key by default) on cool-down and expanding.
Then combine the above with not focusing on the battles happening on screen (try to just box your units and a-move) but rather focus on not letting your macro slip. Those above points alone will be enough to propel you out of the bronze league easily and was also the advice I got from an ex-top 200 player when I was playing Protoss.
I wrote a short-guide a while ago (Sky's Protoss Guide to Promotion) that has a few things that helped me get promoted from the bronze league to the gold league as Protoss, unfortunately I've recently begun playing Zerg so that guide won't be including the later advancements in ladder standings. But regardless check it out; as it may be helpful.
Also, when posting a topic asking for advice; as others have said please try to be as detailed as possible with what you're wanting advice on as well as what HuT suggested of attaching replays for the community to review
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