The "i---" in your search keyword may refer to or a similar "i" prefix streaming service. Historically, ABS-CBN held the license for Slam Dunk Tagalog dub. Check the IwantTFC app or website. They occasionally rotate classic anime into their library.
: A basketball novice who joins the team solely to impress his crush, Haruko Akagi , but eventually develops a genuine love for the game. The "i---" in your search keyword may refer
Here is a ready-to-publish blog post based on your topic: be prepared for low resolution
For now, your cleanest option is the Japanese version with subs. If you absolutely need the Tagalog dub, be prepared for low resolution, broken links, and the risk of malware. and the risk of malware.