How to properly structure GTM for many landing pages?

Question

Marketing

Hello!
We have many landing pages, they are on different subdomains. Several counters are connected to each of them (google, metrics, fb, vk pixels), some counters are repeated on the landings, some are created purely for one landing. Now I'm translating the whole thing into Google Tag Manager, but I'm stuck in the structure. How to do all this correctly so that it is convenient and everything is displayed correctly everywhere. At first, I decided to create a container for each landing (aka gtm counter), but then I didn’t really like this idea. Now I decided to create one container for all landings, put all the counters there, and use the conditions in the triggers to distinguish between the appearance of these counters. That is, the conditions are as follows: if the landing has such a URL, then we set this counter.
Правильно ли так делать и не повлияет ли это на скорость загрузки страниц ?
На скриншотах показал пример подключениях я.метрики к двум лендам.