I am trying to create a bar plot of mean alone with its standard error and confidence interval. In the attachment, I have attached the image of the graphs that I want to generate. Here the 1st graph of the image shows a bar of the mean alone with 2 standard errors and the 2nd graph shows a bar of the mean with 95% confidence interval. These were generated in SPSS.

In addition to this, I would like to generate a boxplot (similar to the last graph). I have given a link of my dataset also.

Can anybody please help me with the R codes to do the above stuffs?