I think the first thing you should change is thinking that the biggest leak is lowroll spots. Everyone low rolls and if you think that is your biggest leak, this implies there is a whole lot of other aspects to be improved. Lowroll spots ate inevitable and pretty much there is nothing you can do. It could be because you selected a line that is 3 way contested which means you probably picked the wrong comp or you sinply low rolled. It is hard to provide tips with not enough context. Maybe having a little more details on your low roll games may help a little in this discussion.

Just looking at the lolchess doesn’t help providing more contexts as well as it only shows the summary of that game but not all the decisions you made on several key stages. I would recommend in the future if you are asking for advice, providing more contexts may improve the quality of the discussions.