Muddle along
Definition 1 of 1
Pro Tip 1/3Informal Usage
The phrase 'muddle along' is informal and best used in casual conversations, not in formal writing or speeches. 
After losing the manual, we just had to muddle along and hope for the best.
Pro Tip 2/3Subtle Struggle
Using 'muddle along' implies a struggle with the task at hand, but without giving up. 
I'm muddling along with my piano lessons, even though they're challenging.
Pro Tip 3/3Lack of Expertise
The phrase often indicates the person is managing without expert skills or knowledge. 
He's muddling along with the home repairs, even though he's not a handyman.