In a 5 years PhD, is it possible to get a postdoc position with one publication? I can really use some advice
I think that any position as a post doc won't be awarded based simply on who has the highest publication count. There is more to it than that. Most positions expect you to fit into a given department or lab in some way and there can be a lot of expectations on that beyond research record. While publications may be important, and more so in some situations, it is unlikely to be the entire story very often. 

Read whatever the offering institution says about the kind of skills and person who is desired and match your own skill set to that as best you can. It may be something as simple as expertise in a field, but there may be an expectation of participation in the educational process, especially of grad students. How well do you fit the expectations, however they are. Some special experience may be needed that you may have or not. 

Of course, you should list your work in progress as such without overstating it. If the papers are written, then you have titles for the work and abstracts. Try to get something submitted so that the process toward publication is started, at least. Get good letters of recommendation, preferably tailored to your suitability for the specific positions you seek.