Do you really need SSL/TLS for encryption safety?

I mean, is it possible to let people access website in HTTPS mode and send encrypted data?
I don't require verification for my users. I just want to make website access safer.

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I mean, is it possible to let people access website in HTTPS mode and send encrypted data?

If your site is being accessed via HTTPS, that means you are encrypting the data in transit using digital certificates. Good old HTTP transmits data in plain text. If you capture HTTP packets you can see the contents in plain text.