Look, no, you're fine! There are basic things that can properly help. Thumbs.Yeah. (I am really clueless and too impatient to read any blogs properly)
What's your recipe, roughly? Assuming it's not very odd...
Allow your starter (if kept in fridge) to get to room temp before mixing in. Feed 6-18hrs before use. No longer! Or re-feed. And feed it with approximately 9 times it's weight. (So I tip out all but a dribble, feed it w 200g flour / 160 of white wheat flour).
That'll get it active!
Most of the rest is down to gluten development, internal structure (folding it), and timing.
Mine'll usually have 20-40 mins autolyse, 2hrs bulk proving (all dough together, in a big oiled b&q plastic tub, folded every half hour), 20 mins in a pre-shape on a counter, and another 90-120mins in a banneton. Bout 5hrs start to end.
If it's not over or underproved by that point, you should be getting about as good a rise as you're going to get.
The only other thing I'd suggest is getting a probe thermometer. Cuts out the guesswork from cooking - 200-205 internal temp and it certainly won't be too damp inside!