I'm going to tell my group project members at university that I don't want to meet at nights anymore.
Is it because you have a new job that requires a lot of time?
Yes, I'm also tired of my group members' laziness. They all seem to be too lazy.
Working with groups in projects can be frustrating since it requires a lot of careful balancing between the needs of people and what they can actually do. It's perfectly acceptable to have to change the time your group meets because of another obligation that you have such as a part time job. You should to try to work out a compromise between everyone so that you can find a time that works out best for all, including you.
That doesn't matter. I think they can participate at days too.
If you can make it work, you should do what works for everyone. It is a group project so you have to make sure the scheduling works for everyone.