I've been using Make (formerly Integromat) for a bit over a year now and honestly I think it's the sweet spot for your use case. The visual flow builder is super intuitive – way easier to grasp than Zapier's linear approach imo.
For the stuff you mentioned:
- Google Drive file management works great, I have templates set up that auto-organize files based on folder triggers
- Social media posting from sheets is straightforward, I do this for 3 different platforms
- Email reminders with conditions are literally drag and drop
The free tier is actually useable unlike Zapier where you hit limits immediately. You get 1,000 operations/month which sounds low but goes further than you'd think.
One thing though – there IS a learning curve for the first week or so. But once you build your first 2-3 workflows it clicks. I'd recommend starting with their templates, they have pre-built scenarios for common stuff that you can just customize.
Also their support docs are really good, way better than most tools in this space. If you get stuck there's usually a video walkthrough.
Lmk if you want me to share any of my workflow templates, happy to help!