Problems enabling add-ons with blender 4.5.3 LTS

Hello everyone so im relatively new to blender. I am taking a course which requires certain add ons that are supposed to already be on blender like bool tool, modifiers and loop tools but ive had to get them all from the extensions site because when I search for them through add ons they just wont come up.

im wondering if it has anything to do with the version of blender that I downloaded. If i did screw up and downloaded it wrong please let me know so that i can set up the proper version I need to start my modleing journey. Im sharing an image of this version just in case it can be of any help for you to help me.