Weird but I need recovery mode

Hello guys, I’m new the the community here. This question isn’t particularly dealing with iOS developing or anything but it’s related to my iPhone so I hope you guys won’t mind.

I followed this post here but it seems like they only show how to get out of the recovery mode, but I need to enter it lol. Something is wrong with my iPhone so I think going into the mode and then get out after will help. Anyone got a good suggestion? Thanks a bunch.