I am unable to install DESeq2 package even after installing BiocManager. I have looked for various sources to find a tutorial video to solve this, yet I keep on receiving unable to write error. Can you give me step by step instructions what to do to get DESeq2 on my R studio. I just want to install DESeq2 package.

Code should be placed in three backticks as shown below

> BiocManager::install('DESeq2')
'getOption("repos")' replaces Bioconductor standard repositories, see 'help("repositories", package = "BiocManager")' for details.
Replacement repositories:
    CRAN: https://cran.rstudio.com/
Bioconductor version 3.17 (BiocManager 1.30.21.1), R 4.3.1 (2023-06-16 ucrt)
Installation paths not writeable, unable to update packages
  path: C:/Program Files/R/R-4.3.1/library
  packages:
    KernSmooth, Matrix, mgcv, spatial
Warning message:
package(s) not installed when version(s) same as or greater than current; use `force = TRUE` to re-install: 'DESeq2'

Read the warning. The package is already installed. Use library(DESeq2) to load it. If that returns errors then please show them.