Help identifying my biggest leaks in SnG tournaments?

Hi,

If this is not the right place to ask for such thing, apologies in advance (where should i ask instead?)

I am new online player, playing NLHE Full ring SNGs, 0.1$ - 2$ buy-ins in micro stakes. Before starting i watched a few yt videos and i started using nash opening charts and i strictly played by those preflop charts (the rest i just played with my common knowledge about poker).. however after about almost 500 sng tournaments, my ROI is about -18%. I would really appreciate if i can share my entire hand history with some more experienced players around here that can help me find my biggest leaks?
I feel like i need most attention to my preflop approach/strategy as i either lose (way too often) whilst in the bubble.

You can download my hand history (exported from PokerTracker4) from here: (My name is Urda2)
(Please only consider full ring tournaments, as i gave up on DoNs and 6max)

Thanks in advance!