There is nothing like the haptic experience of taking pen (or pencil) to paper. While typing on the keyboard can simulate the experience, it's not the "real" thing. Yes, there is the danger of someone reading your journal of inner most thoughts, if not now then long after you are gone. There are precautions you can take though. And that sense of risk elevates the thrill from putting your thoughts down on paper. It's time-tested to deliver maximum psychological benefits. Keep writing.

Many years ago, I used diary.com or something like that. I don’t know if it’s still around, but it’s worth looking into.

There's nothing secure about SW. What was wrong with Penzu?

If you have a Google account, you can also use Google Docs. Create a document, and add tabs for each day. It is the most secure thing out there.

This site is great for journaling. It used to have a journal or story category. For some reason it's just posting now.

a have a paper one but also the notes app in my phone tho there are also diary apps you can even lock nowadays

I got one but no ones ever been nice to me when I share suggestions, so no.

I was never good at journaling.
i always went back and later read what I wrote and realized that it would be better just to burn that.

Get a fireproof, locking safe and lock it in there.

Probably the most secure is to write on paper and make sure no one can find the paper.