Has anyone tried Ubersuggest?

I tried it before, and it doesn't hold a candle to a beefier, paid SEO tool like the ones that you mentioned.

The lifetime offer is very tempting, but given that SEO is so competitive nowadays, you need high-powered tools to do mission-critical jobs.

You can't expect to power nail stuff onto a wall using the heel of your shoe, and that's how it feels using lower-tiered tools when it comes to SEO.