In all you wrote, there are facts. Children should be given the proper and level of education when they are tender to enable them flow well when they are with their peers. A playful environment is what brings out the best in a child and that should not be denied. Children are lagging behind because you think the use of mobile has eaten so much of their time and that has killed their interest in physical activities. Online education is good but has it's effects and so children should be guided!

Success to you!