>>326481242
The cosmos is a piece of trash. 
Best bang for buck is the quest 2 with virtual desktop. You can play PC games on it just fine and it works well. 

If you don't want to get zucc'd, a used vive is an option but it's a second class headset at this point. WMRs like the G2 are better nowadays. Index is great, absolutely fantastic headset, but not good value.