Why bother? In fact, the role of agar is difficult to reach the level of jelly! Even if you do it well, you can't feel the big Q with agar only! I suggest you make jelly with jelly powder, which will be sold in large supermarkets! Also, the ratio of water to agar is 1: 8, which means1two agar: 4 kg of water!
It doesn't form because you put too much water! And it is best to soak the agar in warm water before, so it is easier to form!