Got Color Balance Issue

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Hi, I have this recurring problem that has virtually stopped my editing.

Some color effects have just gone from my Premiere Pro 2021, which are Color Balance, Fast Color Corrector and Three-Way Color Corrector. Until last week, I had no trouble finding and using them in Premiere Pro 2021. 
But, they are not found anymore in the Effects panel. Other color effects are still searchable and usable. It's just the three effects, Color Balance, Fast Color Corrector and Three-Way Color Corrector that are not in my Premiere Pro 2021. Some of my works done with the three effects now show a certain message saying something like, "Color Balance filter is not searchable."
I'd really appreciate it if someone can help me with my problem. 
Thank you

[R Neil Haugen]

Bizarre assumption about Adobe. But then, I shouldn't be surprised.

Because I found your reply quite informative.

You are given the specific information in regards to your issue.

You chose to ignore the information. And in reply, made an assumption contrary to the readily available information.

And this is why you are facing the situation you are in.

Neil