I have regular night accidents that can leak as I usually sleep on my side, is the only way to avoid this by sleeping on your back?
What type of product are you wearing during the night?
Plastic pants alongside a protective product can help contain leaks, however these might not be the most comfortable to sleep in depending on how you adjust to them. Have you tried these before?
I would also recommend finding a cloth diaper, which are often used by people who are side sleepers.
Using a bed pad is also ideal to protect your bed from leakages.
You can try and learn to sleep on your back, however if this seems difficult or un-natural, changing products would be the way forward.