Writing is an important skill for not only publishing and communication but also other career tasks. If you cannot do it for whatever reason (language, habit, psychology, etc.) it is better to learn as soon as possible.
Nobody else knows your ideas and thoughts better than yourself. Writing by someone else is not very likely to accurately reflect what you have in mind.
If you find it difficult to express your thoughts, it can be a sign that the thinking is not clear enough and writing can help refine it.
Do whatever to come up with a first draft. Do not worry about nitty gritty details like grammar as long as your collaborators can understand what you are trying to say. We can iterate the paper draft together to improve the not only the writing but also our thinking and execution of the project.