Hi...may i know is that all ITM call options will be exercise automatically when it expired?

I'm trying to understand the call and put option.
Please correct me if the below is wrong.
Much appreciate for your reply and explanation.
Buy call options = Buyer get the premium immediately? buy at the higher than current price which expecting the price will raise in future?
Sell call options = Seller pay the premium immediately? Why need to sell it if price expect to raise?
Sell put options = Seller get the premium immediately? sell at the lower than current price which expecting the price will drop in future?
Buy call options = Buyer pay the premium immediately? Why buyer choose this?
Which one is able to buy or sell in order to receive the premium?
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can we buy these gigantics stocks here wth minimum capital..i donno

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Malaysian cannot open moomoo Account?

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Hi, everyone, I've just started to learn how to invest in the stock market, and haven't officially bought it yet. Please give me more advice and provide me with some good stocks. Thank you