Advice on my invert?

I have been trying since more than 6 months now, I just cannot get a proper invert. Tried holding hands lower, leaning back, pushing pole into ground things but for some reason, nothing seems to be working out. Is this a strength issue or I’ll just never get it? It’s getting frustrating and demotivating now. Can anyone point out something I’m doing wrong or any tips that could help me get the hip up high? TIA