Salaam, Seeking Guidance on Embracing Islam

As-salamu alaykum, I’m new to this and just wanted to share what's on my mind and maybe get some advice. I’m 17, living in Australia, and honestly, I haven’t really had much exposure to Islam except some negative stuff. Lately, I’ve been curious about different religions and Islam caught my attention. I used to be a strong atheist, but something about Islam feels different, so I started reading and learning more about it. Someone suggested I learn Arabic, which I’ve always wanted to do anyway. I found out there are many dialects, so I started with Fusha to understand the Quran and prayers properly, then I’m thinking about learning Egyptian dialect since it’s widely spoken. I got an English translation of the Quran known for being accurate, and I thought I’d try to do all five daily prayers for one full day. I missed Fajr, not because I was lazy or forgot, but honestly because I was confused. I watched videos about how to make wudu and there were so many different methods, each saying they’re the right way. I picked one taught by a respected mosque, which took about 30 minutes, then I even went outside to pray because I heard it’s best since the air is pure. But then I realized I really don’t know how to pray properly. It’s been hours and I’m still unsure. Nobody explains what exactly to say, if there are different ways, or which parts are mandatory. I’m really in need of help with praying and everything else about Islam. I haven’t met any Muslims nearby except when I travel. Also, if there’s anything haram I should be aware of or any advice for a beginner, please share. When I do decide to embrace Islam, I’ve heard mixed things about whether all sins are forgiven right away or if I need to repent. And what happens if someone commits haram, repents but doesn’t truly mean it-how does that affect the judgement day? Thanks for reading my long post, I’m just feeling a bit overwhelmed and could really use some friendly guidance.