Customization of how your models will be logged is controlled when implementing getActivitylogOptions. You can start from the defaults and override values as needed.
The most basic example of an Activity logged model would be:
use Illuminate\Database\Eloquent\Model;
use Spatie\Activitylog\Traits\LogsActivity;
use Spatie\Activitylog\LogOptions;
class YourModel extends Model
{
    use LogsActivity;
    public function getActivitylogOptions(): LogOptions
    {
        return LogOptions::defaults();
    }
}
This call to LogOptions::defaults() yields the following default options:
public ?string $logName = null;
public bool $submitEmptyLogs = true;
public bool $logFillable = false;
public bool $logOnlyDirty = false;
public bool $logUnguarded = false;
public array $logAttributes = [];
public array $logExceptAttributes = [];
public array $dontLogIfAttributesChangedOnly = [];
public array $attributeRawValues = [];
public ?Closure $descriptionForEvent = null;
##Options methods
##defaults
public static function defaults(): LogOption;
##logAll
This method is equivalent to ->logOnly(['*']).
public function logAll(): LogOption;
##logUnguarded
This option will respect the wildcard *, ->logAll() and ->logFillable() methods.
public function logUnguarded(): LogOption;
##logFillable
This option will respect the wildcard *, ->logAll() and ->logUnguarded() methods.
public function logFillable(): LogOption;
##dontLogFillable
public function dontLogFillable(): LogOption;
##logOnlyDirty
public function logOnlyDirty(): LogOption;
##logOnly
public function logOnly(array $attributes): LogOption;
##logExcept
Convenient method for logOnly()
public function logExcept(array $attributes): LogOption;
##dontLogIfAttributesChangedOnly
public function dontLogIfAttributesChangedOnly(array $attributes): LogOption;
##dontSubmitEmptyLogs
public function dontSubmitEmptyLogs(): LogOption;
##submitEmptyLogs
public function submitEmptyLogs(): LogOption;
##useLogName
public function useLogName(string $logName): LogOption;
##useAttributeRawValues
public function useAttributeRawValues(array $attributes): LogOption;
##setDescriptionForEvent
public function setDescriptionForEvent(Closure $callback): LogOption;