When someone struggles, they try very hard to do something but it is difficult for them. Struggles can also mean a lot of problems or difficulties.
If someone struggles, it usually means they are having a hard time and need help.
Examples:
She struggles to lift the heavy box.
His struggles with reading make it hard for him in school.
I see the cat struggles to catch the mouse.
The little turtle struggles to reach the water.
The town struggles with a lack of jobs.
The flower struggles to grow in the rocky soil.