Normally, it is not recommended or advisable to clean the fuel filter. The reasons are as follows:

Different design purposes: Fuel filters (especially replaceable filters built into fuel pipelines) are consumables designed for one-time or periodic replacement. Its filter material (usually paper or fiber composite material) is designed to effectively filter impurities within a specific period of time and does not have the characteristic of maintaining high filtration performance after repeated cleaning.

The cleaning effect is limited and may cause damage: even if you try to clean, it is difficult to completely remove the small impurities and gum attached inside the filter element. Moreover, the cleaning process (such as blowing with compressed air, rinsing with water, etc.) is likely to damage the microporous structure of the filter element, causing it to lose its filtering ability, or embedding impurities deeper, resulting in more serious blockage.

Safety risk: The fuel system is under pressure and the fuel is flammable. Disassembling and cleaning the fuel filter by oneself poses a risk of fuel leakage and fire. Even if the power is cut off to release pressure, improper operation may still cause danger.

Unable to restore original performance: After cleaning, the filter accuracy and flow characteristics are almost impossible to restore to their original state, and continued use may lead to problems such as poor fuel supply and decreased engine performance.

The correct approach is:
Regular replacement: Replace with genuine fuel filters of original specifications or reliable quality according to the mileage or time intervals recommended by the vehicle manufacturer in the maintenance manual. This is the safest, most effective, and most economical method to ensure the continuous and stable operation of the fuel system.
Under what circumstances may it be necessary to 'deal with' an old filter?
Diagnosis of blockage: As mentioned in the previous question, sometimes in order to determine whether there is indeed blockage, the filter may be removed and the color and status of the internal filter element observed in front of light, or reverse blowing/suction may be attempted to feel resistance. But this is not cleaning, it's checking.

Temporary measures in special circumstances (not recommended): In extreme emergency situations (such as in remote areas where the filter is slightly clogged and the vehicle cannot be driven), someone may try to soak it in a small amount of cleaning agent or blow it very carefully with compressed air, but this is only a temporary solution, ineffective and high-risk, and a new filter must be replaced immediately upon arrival at the destination.

Summary:
For the health of the engine and your safety, please give up the idea of cleaning the fuel filter and insist on regular replacement. This is the correct choice to be responsible for the vehicle and for one's own safety. If you are not familiar with the replacement operation, please be sure to hand it over to professional maintenance personnel for handling.