If your hardware is older, browsers like Brave or Opera (which have built-in ad blockers) can help videos load faster by stripping away heavy tracking scripts.
If you find yourself stuck with low-quality streams, there are a few technical tweaks you can try to boost the performance: Bravotube Low Quality Free Videos -
Sometimes the "low quality" isn't the site's fault—it's an unstable Wi-Fi signal. Switching to an Ethernet cable can stabilize the bitrate. Is There a Better Alternative? If your hardware is older, browsers like Brave