edited out
I guess I am convinced. I don't have any sendable merit. This explanation deserves some of it. I have already started downloading the Bitcoin core. I will let you know once I finish. I have watched a few youtube videos earlier. So, I have a basic idea about that. What if I lost my backup or something like that? What if my HDD Crashes? I am afraid a bit. But, Let's give it a try.
Thanks, no worries! I'm glad I could explain it well.

Make sure to download Bitcoin core either from its official GitHub or from the link you always find in the top section of this forum (
https://bitcoincore.org/en/download/).
In case you are using Windows (which most people do on their personal machines), I would recommend you NeuroticFish's guide:
https://bitcointalk.org/index.php?topic=5367296.0If you're using Linux, you could follow my guide:
https://bitcointalk.org/index.php?topic=5366854.0For everyday usage, I believe
electrs and
BTC RPC block explorer that NeuroticFish added to his guide make a lot of sense, since by using those you get the full benefits of running your own node.
HDD crashes are not a big deal and no worries about backups either; since you won't be storing coins on that HDD. If you are, e.g. by using Electrum as your wallet, then make sure to backup your seed onto paper or steel and you have nothing to fear, since you can always restore those seed word backups.
Here's a topic of mine about creating steel backups for around $3-4 USD:
https://bitcointalk.org/index.php?topic=5363596.0And a more in-depth walkthrough by fillippone:
https://bitcointalk.org/index.php?topic=5389446.0