There are some tools available to automate this part for you like phantom buster and LinkedIn helper. Source: 10 months ago

Https://phantombuster.com/ is also a very good option/tool. Source: 11 months ago

We are in pre-launch and are marketing the CuratedLA Collective through various channels, including a ProductHunt launch, our access to AngelList Talent (now Wellfound) sourcing, niche subreddits, PhantomBuster drip campaigns, personal and professional circles of the CuratedLA audience, LinkedIn and cross-platform recommendations. Source: over 1 year ago

Source: I used to work at a LinkedIn automation company and I'm working on another LinkedIn networking tool now. Source: over 1 year ago

There are scrapers like Apollo.io that you can use. There is also phantombuster.com. Source: over 1 year ago

Here is my product: https://matchkraft.com/. It is a marketing toolkit. I think you need to ask for feedback, asking why users don't want to pay for a premium subscription. So far, you are getting new users that is a good sign you are going to the right direction. Maybe, who is your ideal customer or maybe your product is ok but need more visibility (maybe paying ads). Try to get active users. I really want to... Source: 12 months ago

Calling a 3rd party API: There is a complete ecosystem providing "google-sheets-as-DB". I personally tested and recommend https://sheetson.com/ but there are a lot more with free tiers https://sheetsu.com/ https://sheety.co/. Source: about 2 years ago