No Forex strategy is fully safe, and there is definitely no such thing as "best" Forex strategy. Anyone who tells you otherwise is probably trying to scam you.
Shouldn't you be trading without leverage as a beginner? Right now, your aim shouldn't be to make lots of profits but to hone your skills and preserve your account.
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I agree. It's better to opt for providers such as Polygon, algoseek, Tickdata, as they offer unbundled services which is good for price-conscious individual.
Have you checked Polygon.io. Their real-time data seems reasonably priced. There are also others. I'm familiar with algoseek, Tickdata, etc. These two have only historical data.
Why on earth do you suppose someone would give you a free Forex signal? Even the paid services are not reliable, how much less a free signal. Do not waste your time on such baloney.