botch up something (to) [exp]

Meaning:

• to make a serious mistake while doing something.

Examples:

1. I wanted to repair the TV but I botched it up!
2. Jerremy tried to repair his new car himself but he botched it up!
3. She tried to fix the sink herself, but only managed to botch it up worse than before.
4. The team botched up the project’s deadline due to poor planning.
5. His attempt at baking a cake was a disaster; he really botched it up.