Lately, I have been learning HTML through YouTube tutorials and utilizing visual studio code as my text editor. However, I've encountered an issue with certain shortcuts not working for me. For instance, when trying to input the exclamation mark followed by pressing the tab button ("!" + tab) in order to generate the default HTML template, it doesn't work. Moreover, I am unable to see any tag suggestions while typing, which causes confusion and errors in my coding process. Can anyone assist me in resolving these issues?