India's economy won't be affected by the loss of PUBG. But it will without certain critical parts of the manufacturing supply chain. I don't know what those parts are, but the Chinese govt will know. A good example of this in action is banning exports of rare earth metals to Japan in 2010, affecting Japan's electronics industry.

India is imposing import restrictions on things they could make themselves, like software. Export restrictions would comprise things India can't make alternatives for, like electronics and pharmaceutical chemicals. The effect is closer to the US banning export of chips and foundry services to Huawei.

Unlike the US's tech export restrictions though, anything China makes India could probably find an alternative supplier for, just at a higher cost and lower volume. It'll still hurt, just not as much as being pressured by the US.

Does app ban really have any material impact on citizens?

Not having access to medicines or say equipment used in your power plants will.