The path ¶
of life can be facilitated if people are in interactivity with their true friends.

"in interactivity" is understandable, but sounds awkward to me.

In opposed to authentic friends, fair-weather friends are companions beingwho are supportive and caring only ¶
if all if the situation is going smoothly and unproblematically.

They have embarked upon the partnership ¶
with only the aim of exploitationing the relationship for their own advantages, and when a problem or severe ¶
adversity happens to their mates, they disappear swiftly in order no toto not be affected by the issue.

You can say "exploiting the relationship" or "exploitation of the relationship". I think "in order not to be" and "in order to not be" might both be acceptable, but to me, the latter sounds better here.

The solution may be more investigation or examination prior to ¶
commencement of a friendship as to whether they are worth being in contact with.

Even by adopting this ¶
approach, like marriage, the friend-choosing process is always an unknown quantity.

All in all, human generations may have the need for trusting their friends and shareing their success and ¶
sorrow with them, but some cunning unrealtrue friends are likely to be wrongly chosen.

You can say someone is or isn't a "real friend" or a "true friend", but unreal and untrue are different to me. An "unreal" friend is a friend who doesn't exist, while an "untrue" friend is a real person, but not really your friend.

In opposed to authentic friends, fair-weather friends are companions beingwho are supportive and caring only ¶
if all the situation is going smoothly and unproblematically.

unproblematically is not technically a word, at least in the Merriam Webster dictionary. It's just fine if you want to use it informally, but if you want to be formal in your writing maybe choose a different word.

They have embarked upon the partnership ¶
with only the aim of exploitationing the relationship for their own advantagesgain/benefit, and when a problem or severe ¶
adversity happens to their matesfriend, they disappear swiftly in order not to be affected by the issue.

mates is quite casual and it seems like you are going for a formal tone, so I recommend a different word.

The discernment of such so-called friends can sometimes be sophisticated, since they often have wisely ¶
planned the condition in advance, and they are more alert to the case than the friendship victims, so they ¶
can not be easily identified.

I'm not understanding this sentence, maybe try rewriting it. Leave a comment so I can correct it.

The solution may be more investigation or examination prior to ¶
commencement of a friendship as to whether they are worth being in contact with prior to ¶
starting a friendship.

Even by adopting this ¶
approach, like marriage,the friend-choosing process, like marriage, is always an unknown quantity.

All in all, human generationpeople may have the need forto trusting their friends and share their successes and ¶
sorrows with them, but sometimes they choose cunning, unreal friends are likely to be wrongly chosen.

Due to the fact that humans are basically social creatures, they almost cannotrarely depend only upon their ¶
own capabilities, and they need to have cooperatione with others to fulfill their accomplishmentattain their goals.

[almost + cannot] do not usually go together. Fulfill + accomplishments do not go well together.

The path ¶
of life can be facilitated ifenhanced when people are in interactivity with their true friends.

InAs opposed to authentic friends, fair-weather friends are companions being supportive and caring only ¶
if all¶
when the situation is going smoothly and unproblematically.

They have embarked upon thein a partnership ¶
with the only the aim of exploitationing the relationship for their own advantages, and when a problem or severe ¶
adversity happens to their mates, they disappear swiftly in order not to be affected by the issue.

The discernment of such so-called friends can sometimes be sophistcomplicated, since they often have wisely ¶
planned the condition in advance, and they are more alert to the case than the friendship victimsnature of the relationship than the person taken advantage of, so they ¶
can not be easily identified.

The solution may be moreinvolve greater investigation or examination prior to ¶
commencement ofbefore ¶
starting a friendship as to whdethermine if they are worth being in contactyour friend.

Even by adopting this ¶
approach, like marriage, the friend-choosing process is always an unknown quantican involve uncertainty.

All in all, human generationkind may have the need forto trusting their friends and share their success and ¶
sorrow with them, but some cunning unreal friends are likely to be wrongly chosen.