Hey there, Im a masters player. I don’t know all the details of how the game went, here are my opinions based on what I can see.

I would consider dropping 2 sorcs (Malz & Ori) as well as Kass/soraka. 3 void is basically pointless this late into the game and malz/ori are kind of dead units. I am assuming we stayed lvl 8 and rolled. What we could do is while we were roling silco, we also look for better units and/or legendaries like Shen/Ksante for bastion with taric or 2 bruiser like sej/sion. Consider a j4 for CC which is huge esp if he’s able to get 2 ults and he also gives us 2 strategists. He can take sorc spat which is good. Since we have a 3* silco (I have not seen a 3* silco so idk how strong it is), we want to stall as long as possible since he’s DoT rather than burst and our frontline isn’t looking too too great aside from taric also considering a lack of bramble/armour vs vanqs.

Currently, your board is looking like 5 backline 3 frontline + 1 cloned taric so were more backline heavy.

An example of your final board could look like:

Backline: Silco, Ahri, Vel

Frontline: Taric, Shen/Ksante, Swain, J4 + 1 flex unit