You need to insert patches into the game in different ways. It all depends, first of all, on the application itself. Some games need regular updates (moreover, automatic from the Internet), and some may work correctly without add-ons, respectively, patches are installed more difficult and at the request of the user.
Instructions
Step 1
Some games (especially network games) require regular updates to work correctly. Therefore, it is advisable to set the "update automatically" item in the settings of such games. Otherwise, it is possible that the game will work incorrectly at some point or require an update to be installed. Updating manually is also possible, but most likely it will cause significant inconvenience (especially if the game is updated several times a day).
Step 2
Most of the patches are located on the sites of the official versions of the game or on the portals created by fans. Also, quite often patches are located on general game resources (for example, https://www.playground.ru). In this matter, you should take into account right away that downloading patches for the game from other resources (especially those located on free servers) is extremely dangerous. Because, unfortunately, viruses or other malicious software are often inserted into patches. Therefore, before downloading from the site, you need to make sure that the download is safe, at least according to user reviews
Step 3
Most often, the patch is placed in the "installer" installation file. After starting, you need to specify the directory of the game, after which the patch will be installed correctly. Also, quite often the patch is placed in the archive (formats: rar, 7z, zip, etc.). In order to extract the patch from the archive, you need to use an archiver (for example, WinRar or 7Zip). It is better to install the newer versions, since the old ones do not work with some formats. After extraction, as a rule, you need to replace the old files in the game directory with new files from the archive. Usually, instructions are also attached to the archive.