Why don't the command blocks work in minecraft in single player?

I made / gamerule commandblockoutput true and it still works I tried 1.14 but it doesn't work.

Can anyone help me?

What exactly did you try

Which version and edition do you play?

Is the command written in color?

A give command

1.14 and java

It is red because of 1.14

In the Bedrock Edition there's a "CB on / off" switch in the settings. Is there one in Java too?

Are you in creative mode?

What exactly did you enter? If the command is red, it means that the command was misspelled and not on the command block.

Did you also enter / gamerule commandblocksEnabled true?

The whole?

Try this command:

/ gamerule commandBlockOutput true

Except / give @p

Yes and I made / gamerule commandblockoutput true

I've already

With the same capitalization

Yes

Have you activated cheats

Yes

What exactly did you enter?

What did you use for a give command

If the command is red, it is faulty and can't be executed