I walked starting in late October right after Spain opened from Covid, all the way to Santiago. I had no problems finding albergues. I did end up walking to Astorga as I was told a few times when I was approaching and in Salamanca that some albergues on the Sanabres had not even opened yet or were closing early and I may have really long stages of 20-35K which is not for me. But before that there were no problems at all.
You can't control when an albergue will close no matter what an app or Gronze.com says. It is at the whim of the owner or the town. So if you are concerned call the day before or send a whatsapp to confirm they will be open.