I find homemade hearty soups (lentil, pulses, veg and stock), small casseroles, stews, anything cooked in a tomato based sauce (e.g. chilli, bolognaise) freeze well and don't suffer noticeably in taste or texture as long as not left too long, so I cook a two portion meal and just revive after gradual thawing with some added mushrooms, fresh herbs, whatever suits the dish if I have any to hand. Have another go - but I agree not everything freezes equally well.