Best to you!
Also it depends on how many applicants a landlord receives on the rental house. You may want to include a letter of explanation (why your credit score is low), when you submit your rental application.
As far as your criminal record, that of course would need to be disclosed on the application. Some landlords also require a background check, & they (landlord) will have to make their decision based on the type of criminal offense & length of time, and circumstances surrounding the offense. (you may also include a separate letter of explanation if necessary).
Everyone deserves a second chance. Best of luck to you!