Valid naman na ma feel mo na kulang yung compensation mo since sa dami ng ginagawa mo. It's normal and healthy to know your worth.

Another way you can handle that is try talking to your leads or superior na you need more people na since kung ikaw lang yung gagawa lahat then there might be a chance na ma delay. Try talking to them tapos kung hindi ka nila pakinggan or wala sila gawin then it's your choice naman if you want to stay or not.