The chart you shared is for Theta Network (THETA). The massive spike you see followed by a long decline isn't necessarily a "pump and dump" in the traditional sense, but rather a result of a massive Market Cycle combined with specific fundamental issues.

Here is the breakdown of why this happened:

1. The "Pump" (2021 Bull Run)

In early 2021, THETA went from under $1.00 to nearly $15.88. This was driven by:

Massive Hype: It was marketed as the "future of video streaming" (a decentralized YouTube).

Blue-Chip Partnerships: Big names like Samsung and Sony became Google Cloud validators for the network, creating huge retail FOMO.

Staking Rewards: High incentives for locking up tokens reduced the circulating supply, pushing the price up artificially fast.

2. The "Dump" (The Long Decline)

The drop to the current $0.22 level (a 98% crash) happened because:

Crypto Winter: Like most altcoins, THETA suffered heavily when Bitcoin crashed in 2022. Altcoins usually bleed much harder than BTC during bear markets.

DePIN Competition: Newer projects (like Render or Akash) began taking the spotlight away from Theta in the decentralized infrastructure space.

Recent Legal Troubles: As of late 2025 and early 2026, THETA has faced significant FUD (Fear, Uncertainty, and Doubt) due to lawsuits involving its leadership. Allegations of market manipulation and internal mismanagement have caused many long-term holders to exit.

Technical Summary of your Screenshot

Price Level: The coin is currently sitting at $0.220, which is near its historical "accumulation zone" from years ago.

The 24h Trend: It shows a +11.68% bounce, but looking at the 180-day and 1-year data at the bottom of your screen (-61% and -65%), the long-term trend remains very weak.

Volume: The volume is relatively low compared to its peak days, meaning there isn't enough "buying pressure" yet to start a new massive bull run.