You are pasting content from another program or source into Word. But styles come in colored, bold or different fonts as in the source web site or the program. You can practice this for one-time use as follows.
But if you are going to use it constantly and your job is too much, let's provide this setting permanently without wasting time.
Word in ;
Office icon or the File option is selected according to the version.
Cut, copy and paste section,
Paste from other programs: YKeep Text Only is selected
After saving, your program will paste only the text and take the style in the area you paste.