What kind of text is better to send to an online friend?

What kind of text is better to send to an online friend?

I don't want my online friend to get annoyed of me so I don't text them everyday (I mean, we text on a social media now so they receive notifications on their phone whenever I text them).

Would an online friend get annoyed if I just text them "Hey, what's up?" or "How are you?"? I mean, would that just seem clingy?

Or would it be better to actually send them memes or cool stuff, etc. And then a conversation could develop after, y'know?

What should I do? I've recently started texting my online friend on a social media (after being friends for 8 months) but I sure don't want to seem clingy or annoying (since they can now receive push notifications for every message I send). I just wanna respect their boundaries (but I don't wanna ask if texting them every day or every 2 days would be too much because that would be a bit weird in my opinion) haha.
"Hey how are you/What's up?"
Sending memes, videos, interesting things (and maybe develop a conversation about what you have sent)
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What kind of text is better to send to an online friend?
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