A solution would be to have adequate speed and slowly pull back. Also if you raise the nose and it doesn’t take off yet, just keep it in the position and the further acceleration should get you off the ground.
To avoid a tail strike, simply watch that you don’t exceed the rotation angle that causes your tail to touch the runway. It should be somewhere between the 5 and 10 degree mark. So maybe avoid exceeding 7 degrees or so.
Then with you limiting the rotation angle (and at MTOW, or whatever weight), there are only two things that affect when you lift off: speed and flap setting. So whether you are choosing 10 degrees of flaps or something else, you just have to accept the speed necessary to get lift off while holding 7 degrees of pitch up. Those are the constraints the flight model offer you.
I needed quite a bit of speed to start the positive rate of climb at MTOW with flaps 10 (let alone flaps 20)!