scrapy splash not getting all elements - scrapy

Question

this is my script. It works fine, but it's not getting all the data :
import scrapy
from scrapy_splash import SplashRequest
from concurrent.futures import process
from scrapy.crawler import CrawlerProcess
from datetime import datetime
import os
if os.path.exists('jfs_ninos.csv'):
os.remove('jfs_ninos.csv')
print("The file has been deleted successfully")
else:
print("The file does not exist!")
class JfsSpider_ninos(scrapy.Spider):
name = 'jfs_ninos'
#allowed_domains=["https://www.justforsport.com.ar"]
start_urls = ["https://www.justforsport.com.ar/ninos?page=1"]
def parse(self,response):
total_products=int(int(response.css('div.vtex-search-result-3-x-totalProducts--layout.pv5.ph9.bn-ns.bt-s.b--muted-5.tc-s.tl.t-action--small span::text').get())/32) + 1
for count in range(1, total_products):
yield SplashRequest(url=f'https://www.justforsport.com.ar/ninos?page={count}',
callback=self.parse_links)
#Extrae links de cada pagina de la seccion
def parse_links(self,response):
links=response.css('a.vtex-product-summary-2-x-clearLink.vtex-product-summary-2-x-clearLink--shelf-product.h-100.flex.flex-column::attr(href)').getall()
for link in links:
yield SplashRequest(response.urljoin('https://www.justforsport.com.ar' + link), self.parse_article_detail)
def parse_article_detail(self, response):
precio0=response.css('span.vtex-product-price-1-x-currencyContainer.vtex-product-price-1-x-currencyContainer--product')[0]
yield {
'Casa':'Just_For_Sports',
'Sku' :response.css('span.vtex-product-identifier-0-x-product-identifier__value::text').get(),
'Name':response.css('span.vtex-store-components-3-x-productBrand::text').get() ,
'precio':''.join(precio0.css('span.vtex-product-price-1-x-currencyInteger.vtex-product-price-1-x-currencyInteger--product::text').getall()),
'Link':response.url,
'Date':datetime.today().strftime('%Y-%m-%d')
}
process= CrawlerProcess(
settings = {
'FEED_URI':'jfs_ninos.csv' ,
'FEED_FORMAT': 'csv',
'FEED_EXPORT_ENCODING':'utf-8',
'CONCURRENT_REQUESTS': 16,
'AUTOTHROTTLE_ENABLED': True,
'AUTOTHROTTLE_START_DELAY': 1,
'AUTOTHROTTLE_MAX_DELAY' : 1,
'USER_AGENT' : 'Googlebot/2.1 (+http://www.google.com/bot.html)'
} )
process.crawl(JfsSpider_ninos)
process.start()
i don´t understand why I'm getting about 70 items, when tehere are 158 in total...
what's wrong? I can´t find an answer. I would like to set the random user agent, but all topics related, show the way via the settings.py, but not via the process= CrawlerProcess(
settings = { }
I saw this post : How to add random user agent to scrapy spider when calling spider from script? , but via that way, I don´t know hot to export the.csv.Line :
'FEED_URI':'jfs_ninos.csv' ,'FEED_FORMAT': 'csv'
if someone could help me, it would be great!!. Thanks in advance