Apology Letter For Work Mistakes
Dear {Recipient},
I want to offer my apologies for messing up, specifically on {project/s}. I've {had a full plate/been under a lot of stress/been having problems at home/etc.} as of late, hence my unsatisfactory performance at work.
If it would be possible to split my workload with {name/s of colleague/s} for {the next couple of weeks/the remainder of the project/etc.}, that would really help me get back on my feet.
Regards,
{Your Name}