BThe bare necessities of life

I think there are "3 pillars , the" in life which are the most fundamental things and the baseis of everything.

Putting "3 pillars" in quotes reads more easily because it makes it clearer that this is your personally chosen metaphor.

And we all know them well,: it is enough just to ask yourself directly and give an honest answer from the bottom of your heart.

Thosey are a couch, a TV and a refrigierator.

And oOn a desert island, nobody will take your cold beer , will occupateor your place on athe coauch, and won't be switching the channel on the TV "to find something more interesting" instead of your "boring" World Football Championship.

It's not clear how this links to the previous sentence, so "and" doesn't really make sense here. We use "on TV" when we're talking about a television program, but "on the TV" when we're talking about the appliance itself.

Those are , byin my humble opinion, the real "bare necessities" of life for any civilized man even on a desert island.

If by "man" you mean "adult male person," then that choice is fine here, but if you mean "person" in a more general sense, modern English prefers a gender-neutral term (although you will see "man" used in a gender-neutral way in older texts and some set phrases, it's considered outdated or even sexist to do that now).

Bare nNecessities of lLife

In English, we tend to capitalize all of the letters in a title.

I think there are 3three pillars , the fundamental things andthat form the base of everything.

We tend to use written versions of numbers until we get to larger numbers.
I removed some words here to make it more natural.

And we alleven if we know them well, it is enough justgood to ask yourself about them directly and to give an honest answer from the bottom of your heart.

Thosey are a couch, a TV, and a refrigierator.

Small spelling error with "refrigerator"

And on a desert island nobody will take your cold beer , will occupatey your place on athe coauch and won't be, or switching the channel on TV "to find something more interesting" instead of your "boring" World Football Championship.

Just some changes here with verb tenses and spelling.

Those are , by my humle opinion, the real "bare necessities" of life, in my humble opinion, for any civilized man, even on a desert island.