What channel do you think is the best to acquire users?

I have tried many platforms these days to do user acquisition. The platforms are as follows: 1. Reddit: For me, finding the subreddits that best fit your niche and contributing to and engaging with the community is quite useful to get attention. 2. Product Hunt(for sure🎉) 3. Slack Finding some related slacks can be quite useful if you want to find your peers and fellow founders. While the biggest obstacle for this is finding the person to invite you in🥲 Besides these, do you have any recommendations on where to acquire your users? Let's share and talk about that😎