I have seen the price of bitcoin increasing when I thought bitcoin will not increase so much, I am thinking now it will be better to invest now before it will be too late.
Never be too late to join as bitcoin block rewards are halved after every four years. Each 4 years, bitcoin has one cycle to the Moon.
A friend of my told be about this forum, that it can be a way to help in a way I can avoid online scammers. What makes me not to invest before is because I am afraid of the internet, I was thinking money that goes into internet may be trapped there forever
You are afraid of online attacks perhaps. Do you know that with bank transfers, you can do it online and have you ever been afraid of online bank transfer?
Bitcoin transaction is irreversible so if you click send your bitcoin or click "Release bitcoin" for your trade, your bitcoin will be move and you will never be able to reverse it. Check address, amount carefully before you click Send or Release.
If the platform you use has an security option "2FA code when Release my bitcoin", please choose it. It is a prevention for your mistaken "Release bitcoin" Click
coinomi, the other says electrum, I do not know which one is the best, which one can store my bitcoin in a way I will not lose it.
Electrum is best as it is a SPV wallet. It is light and you don't need to have 500 GB in your disk to download and store all blockchain data.
It is a non custodial wallet and you can customize your transaction fee (sat / vbyte)
Download it:
https://electrum.org/#downloadVerify your download:
How to Safely Download and Verify Electrum