Just can't please my partner in bed

SAYS I'M WORST LOVER

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MY girlfriend says I'm the worst lover she's ever known.

She constantly criticises my moves in bed. I can't do anything right no matter how hard I try.

She complains when I touch her in the wrong way (too hard or too soft); she whinges when I don’t understand what she wants regarding positions and expects me to be able to read her mind.

In the past few months, I've tried everything I can think of to pleasure her and turn her on. I'm at my wits end.

I've invested in sex toys. I've taken her down the common to watch the doggers (she really didn’t like that). I've splashed out on massage oils and lingerie, but nothing floats her boat.