Give it the old college try

Meaning

To attempt something with sincere effort, even when the odds of success are low. It is a phrase often used when you might fail but want to show grit.

Encouraging, nostalgic

Used in a sentence

• I do not know if I can finish this marathon, but I will give it the old college try.
• The team knew they were outmatched, but they gave it the old college try.
• I cannot promise I will fix the engine, but I will give it the old college try.