I used to wet the bed from the time I was born until I was 15 years old and I tried a lot of things to stop wetting the bed at night such avoiding liquids an hour before bed time, urinating 30 minutes before bed and then peeing again right before I got into bed and I still sometimes woke up in a wet bed.
I then had to resort to taking medications that the doctor prescribed and it kept me from wetting the bed as long as I kept taking it.
If you don't want to take medications then avoiding liquids before bed, and trying to pee before bed to empty your bladder as much as you can is about the only natural options you can do to try and stop wetting the bed.
Other than that I would recommend wearing some absorbent underpants such as Goodnites or some Youth diapers or Pull Ups to help keep your bed dry and your clothing dry which will make you much more comfortable.