A unity example scene of CptPotato's smooth pixel filtering.
It uses a material with a custom JitterFreePixel shader.
To get jitter free pixel art set the filter to bilinear filtering on the imported textures under the advanced tab, create the sprites and apply the JitterFree material.
Built using Unity 2020.3.12f1 I have not tested it with older versions of unity so it may not work. Should work on mobile down to GLES 3.0
Background artwork by Luis Zuno
Shadertoy example by d7samurai
There is also a Godot version
Explanation of how the shader works on Handmade Hero
An Example