Egoistically

He egoistically spent all his money on himself without helping his family.

He egoistically refused to compromise on the project, causing delays.

She egoistically demanded all the attention from her friends.

She egoistically hogged the ball during the game, not giving her teammates a chance to score.

The artist egoistically insisted on using only his own ideas in the project, ignoring others' contributions.

She egoistically refused to compromise on the vacation destination, insisting on going where she wanted.

He egoistically bought the last piece of cake without asking if anyone else wanted it.

The CEO egoistically awarded himself a large bonus while laying off employees.

He egoistically insisted on driving despite being too drunk to do so safely.

He egoistically demanded all the attention during the meeting, interrupting others when they spoke.

The CEO egoistically decided to lay off employees to increase profits.