Many people have LDs without knowing what they are which sounds like what happened to you. Often times there's something really strange or we're just really aware that dream and we end up realizing we're dreaming which leads to an accidental discovery.
As for some advice I suggest trying
All Day Awareness or ADA. It basically taking 5-10 minuets each day and trying to become hyper-aware and very in tune with your senses.
Tutorial Here. It helps a lot with DILDs and just makes you more aware overall.
Other than that there's not much else you can do except keep a positive mindset and maybe experiment with different induction techniques to find which one is right for you. Just be sure you really question reality when you preform your RCs and aren't just going through the motions. If you just do it like a chore then there's a good chance that, even if you do one in a dream, it won't work and you'll think you're awake. This has happened to me before and it is very frustrating so you want to be sure to try and avoid this.
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