In Minecraft I’ve been trying to make a water particle effect, but it never works

you can put this into a repeating command block to create something that looks a bit like rain that everyone can see.

/particle minecraft:dripping_water ~ ~10 ~ 2 1 2 1 10 normal @a

the syntax for /particle is:

/particle <name> [<pos>] [<delta>] [<speed>] [<count>] [<normal|forced>] [<viewers>]

where <name> is the name of the particle effect that you want to use

<pos> is where you want to use the effect

<delta> is how big the area where the particles can spawn should be, using <pos> as the center point

<speed> determins how fast the particle is animated (it does not seem to make a difference for me in the command above)

<count> determins how many particles should be spawned

<forced|normal> decides if the particles are forced, or if they are normal, which means that they obey the graphic settings of a player (for example by spawning fewer, or none)

<viewers> decides who can see the particles.

more on /particle