In the MoonBot terminal, in the strategy settings on the Filters / Base tab, there is a MinLeverage parameter (minimum leverage) with which to take coins into account. If the leverage on the coins is less than the specified value, the strategy will not take such coins into account. If the IgnoreFilters = YES checkbox is selected on the Filters tab, this filter will not work and all coins will be analysed regardless of the set leverage. By default, the MinLeverage parameter is set to 1, i.e. coins with leverage x1 will be used, which means “all coins”. In your case, you need to set IgnoreFilters = NO and MinLeverage = 20, then coins below leverage x20 will not be considered by the strategy.
To ensure that this parameter is checked by the strategy, you need to set IgnoreFilters = NO on the general Filters tab, and set IgnoreBase = NO on the Filters / Base tab. A green vertical bar should be lit to the left of the Filters / Base tab, indicating that this tab and the parameters in it are not being ignored.