How to grow your LinkedIn account and maintain your presence there?

We're not going to lie. One of the key places people ask you for help with a PH launch is in LinkedIn DMs (followed by X and email).

Most connections I got were people from Product Hunt, so it is a pity not to use that platform.

I am trying to grow LinkedIn and play with many strategies, among:

• posting several pieces of content per day

• actively comment on other people's posts

• send a certain number of connection requests per day

• do collaborative posts with other creators

• writing LinkedIn articles/newsletters (native feature)

Do you have a specific approach that has proven effective when you've wanted to grow on the LinkedIn platform?

I would also like to hear your LinkedIn journey. Feel free to share.

I posted several approaches in my original LI post if you are curious. 
And if we are not connected yet, feel free to send a request.