We know somehow subscription on official platforms to stream live matches can be expensive and many has opt to use other platforms offering really lower fee or entirely free subscription for Live matches.
In my country this is somehow common and one thing I have noticed about such sites is that they are filled with various ads, which is obviously were they get their money.
Now, Jenny Radcliffe, a professional hacker, has claimed the risks of illegally streaming are huge. Here is her statement
The perception that illegal streaming is a victimless crime is completely inaccurate
The sites that host these services are loaded with malicious links, back doors and tricks to access people’s digital and financial information, giving professional criminals an open invitation to steal from anyone who engages in these activities.
Whether it's multiple charges to credit cards, installing malware on devices, accessing bank accounts, or stealing personal information such as emails, messages, contacts, photographs, documents and browsing history, engaging in illegal streaming makes you a prime target for professional fraudsters.
And what is worse, because these activities are illegal, victims may have little or no recourse for recovering their losses and may even face criminal charges themselves.
Outside this fact another reason to avoid this is from the news about The Premier League has increased its efforts to prevent fans, whereby those caught offering such services with no copyright face charges and possibly jail terms
https://www.sportbible.com/football/football-news/premier-league-iptv-illegal-streaming-godaddy-court-prosecution-561857-20240425