After defeating the Ender Dragon and turning back to the normal dimension, my level was 67 as a reward for defeating him. Then, i spend the levels in enchantments until i was level 28.

After that, the progress track has not been enable to level up with ores (Diamonds, Lapis, Redstone) or even when killing any type of mod (The game take up the EXP orbs but the track is stop). I tried changing the version but doesnt work (The problem initiated in 1.16.5).

The only experience source that is left is trading with villagers, which produce scarce EXP.

Thanks for the attention.