I don't know if anyone has talked about this before in this forum if anyone has done it before please pardon me I'm ignorant.
You don't need to be this ignorant, all you need to do is just have a look around and you will find plenty of posts and threads discussing the same things.
Mining:
Mining involves using computers to solve complex mathematical problems in order to earn Bitcoin as a reward. Me and my friends once mined Bitcoin on a particular app I think the app is called Bitcoin mining.
This process of mining will take you a lot of time and is also data consuming you need to have a lot of data to do this.
What year was it exactly? If you are talking about initial years of Bitcoin's launch then it's possible, but if you are talking about recent years then let me tell you that individual mining is not profitable anymore, and besides, you can't use a computer to mine Bitcoins anymore, you need mining equipment and a lot of them to be able to mine a block because the difficulty is extremely high, and if you say you used an app called Bitcoin mining, I think maybe you and your friends used a Cloud Mining service which are 99% of time scams.