optimzed wordpress websites and get score higher

Need to get all sites a high score for mobile and desktop on GT metrix and Google page insight. Need to get all sites with good speed by testing various country and get those speed need to be high in multiple country.

sites need to optimize are
www.globalonetravels.com
www.mstarcapitalgroup.com
www.mstarmarketing.com
www.mstartechnology.com