Regardless of what you might "think", it really is necessarily that simple. If you try hard enough you can always find plausible excuses for failure.

> If you try hard enough you can always find plausible excuses for failure.

That is true but it does not imply that success is possible for all people in all cases.

I can always blame some external factor for my loss in a competition but it is not necessarily within the realm of (realistic) possibility for me to win every possible matchup.