Guys, I didn't really like it, it doesn't provide much lubrication due to its high fluidity and it leaks from the chain, making everything worse even if you put a little bit more because of the fluidity

Excellent chain lubricant! I have been very satisfied with its recent use.

I have been using Belray Super Clean since it first came out as a product on the market because it didn't dirty the rear wheel with residue. (see guide for various on-off motorcycles since 1975, and trying various other chain lubricants over time, but abandoning them after the first uses and sticking with Belray).

Recently, I decided to use Motorex Chain Lube Off Road. And I noticed a clear difference in chain lubrication, and I explain:
1) Visual difference: even after 200 km of riding (90% on, 10% off), the chain remains lubricated (i.e. shiny) and visibly has the lubricant on it (i.e. wet).
2) Mechanical difference: The rear wheel in the air (on the center stand) turns with much greater ease and comfort than with Belray. This difference is especially noticeable after each lubrication.
3) Auditory difference: The chain is not audible at all compared to the surrounding noise from the bike's movement on the road.

Comparing the two:
Belray is good, but it solidifies quickly and remains like a white "resin" (in the form of thick adhesive grease) on the chain.
Motorex is more fluid (especially when sprayed) and penetrates/spreads more easily and deeply into all parts of the chain (while remaining stuck on it), helping to better lubricate the links.

Apart from the above two, another lubricant that had left me with very good impressions (out of the many I have used) is Motul.

UPDATE 23.12.2023: After 6000 km and lubricating the chain with Motorex every 200 km, the impressions continue to be very good. Lubrication is always done at night to allow the volatile components to evaporate by the next morning. The rear wheel gets slightly dirty (not dramatically), but it cleans easily afterwards.

I generally use it and use it professionally in a car, it is the best despite its specifications being for motocross

The worst I have tried! In half an hour of riding on dirt, the chain dries up and makes noise! It was better with a universal grease spray that I used in the past!