I had an appointment with an ENT recently. He said that weight and age affects snoring mostly unless it’s some actual condition. The weight affects it because of some compression on the neck or something like that.

I went because I had a deviated septum and thought that was the cause of the snoring but he said that’s unlikely if the snoring only started recently.

Tighten up the diet to get weight down.

Exercise. Any kind of exercise, from strength training to walking.

The diet-and-exercise cliche is a cliche because it effects just about everything about us. It may not be the only factor in snoring. Or even the dominant factor. But I'd bet the house it's a factor.

Nasal dilators, mouth tape and possibly a nightly salt rinse for your sinuses with a neti pot are your friends buddy

Get a sleep study done to find out how serious it is

The approach that's worked for me: define the smallest useful version first, ship it, then iterate based on real feedback. Most people overbuild before they have any users.