Data pack doesn't start by itself (MC 1.20)

Everything works flawlessly once I type manually the starting function of my data pack.

All commands appears in the auto-complete.
Data pack appears in the /datapack list
JSON files are in data/minecraft/tags/functions

But it doesn't load at all by itself.
load.json
{
    "values": [
        "sklps:start"
    ]
}

tick.json
{
    "values": [
        "sklps:loop"
    ]
}

Even the tick function only starts looping when I use the starting function.
Please, help!