Sam's Club China involved a former Alibaba president as its CEO recently.

I've never seen involved used like this... Is it like they hired/appointed a new CEO?

The members have shown strong resistance to him because of his involutionsvement.

A lot of members have said on social medias that they had canceled their member cardsship because they feared the product quality would decline in the future.

This morning my wife and I went to the Sam's Club we usually go, to and it was not as crowded as before.

I thought maybe it was because the involving of the new CEO.

People really dislike involution culture and inclusion person.

I've not heard of inclusion person either... is it like nepotism?

After our shopping, we ran into an error that we couldn't use the self checkouwith the self checkout. We couldn't use it as usual because the checkout system got updated.

We had to wait for a long time to getfor the staff checkout.

Sam's Club China involved (hired?) a former Alibaba president as its CEO recently.

Do you mean they hired him as their CEO?

The members have shown strong resistance to him because of his involutions.

“Involutions” doesn’t make sense in this context but I don’t know how to correct it because I don’t understand what you’re trying to say.

A lot of members have said on social medias that they had canceled their member cardsship because they feared the product quality would decline in the future.

“Media” is plural.

This morning my wife and I went to the Sam's Club we usually go, to, and it was not as crowded as before.

I thought maybe it was because the involving of the new CEO.

People really dislike involution(?) culture and inclusion(?) person.

Sorry, but I don’t understand.

After our shopping, we ran into an error that we couldn't use the self checkout as usual because the checkout system had been updated.

The former self checkout equipments haved been replaced by Alibaba's.

We had to wait for a long time to get the staff to check us out.