Question: I do not understand ocelot plan during the games. nor that of solidus. can you help?

[black king]

Ocelot's motivations are complicated. Also, I don't think Kojima had his entire motivations mapped out from the start of the series.

The Patriots weren't a fully united front since the Les Enfantes project cloned Big Boss. They split into Big Boss's faction (himself, Ocelot, and EVA) and Zero's faction (Zero, Sigint, and Paramedic). Oceloet remained loyal to Big Boss's side of the Patriots. He thought he could use Solidus to get closer to the Patriots so he went along with Solidus's plan to engineer the Shadow Moses incident in MGS1. Solidus wanted REX to use against the Patriots but it was destroyed and his Sec of Defense was working with the Patriots to neutralize everything.

Solidus also believed the Patriots were 12 people instead of AIs. Ocelot hoped Solidus would expose the S3 plan and the AI patriots. His goal was to eliminate Zero's branch and the AIs that Sigint had created.