For liquidity, the team on its part should simply connect its market maker. But given that this is not their best priority, then you can wait for this for a very long time.
Marketing is a very important component in the development and promotion of the project. For these purposes, you need to have a separate budget and invite highly qualified specialists.
Without need of money, even an experienced marketer will not be able to realize their ideas in life, very much depends on investors.