In my experience, people here generally give out upvotes less frequently than on other social media, but at the end of the day, it really is up to you. Most people, myself included, tend to usually only upvote if the post is informative, insightful, and/or clearly had a lot of effort put into it, but if you want to upvote most posts you see, then that's fine.
It also shifts with the culture of the site. A lot of posts from 6+ years ago have many upvotes because people upvoted more liberally back then, and more recently, I've noticed people being more happy to give out votes than usual over the past couple months.