2. Issue-A: Having a hard time buying coins without submitting into KYC entities. If I go peer-to-peer markets, its so expensive.
Issue-B: Having a hard time cashing out without submitting into KYC entities.
Try to use another P2P marketplace, the exchange rate should be reasonable if there are many buyer/seller there.
3. I dont know things about hiding I.P.s, VPNs, TOR browser, coin joining, coin mixing, etc., and Im not planning to learn and use it. So I know everything about my crypto activities are traceable because Im not techie. Does that mean I should just surrender any effort to get anonymous and just submit into KYC, because its just the same (my I.P. is not hidden, etc.)?
Im in a developing country here in Asia where cryptos are not illegal I believe. Im investing/trading not much, only around $1000-$1500 back and forth, circulating in my accounts.
As @20kevin20 mentioned, you can use Wasabi Wallet. All you need to know is the good practice to have better privacy such as one-time address (only use 1 address for 1 usage) and don't make one big transaction where you use many address with different usage.
4. Will these KYC things (submitting my documents) do any harm on me?
Yes, I know privacy is important, but it really tires me up. With this little amount, I think I wont be of a target of hackers/bad guys (a waste of time for them). Right?
At worst, the exchange will sell all your personal information and activity to third-party, which can be abused for blackmailing, identity theft, etc.
At best, your personal information will be sent only to government agency and government can track you easier.