I need an idiots guide to connecting a 433mhz remote

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Hi all. Total noob here. Apologies for knowing nothing. Grateful for any shared wisdom.

So I was given an old electric projector screen which has a remote. I bought a smart ir blaster and then discovered my remote isn’t ir. Eventually found some documentation which implies the remote is 433.92mhz.

Can anyone point me to a morons guide to integrating it? With least possible cost & engineering skills ideally.

FYI, I did extensive googling before daring to post but everything I’ve found is way too high level. I need a guide that assumes the end user (me) is a five year old with learning difficulties.

Input appreciated.

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Maybe ?

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Thanks for the guidance.

For anyone else in the same boat. I went with a linknlink eHub. Which works with their app but just found out their HA integration is broken and they don’t seem keen to fix it.

Guess I’ll try the rm4 pro next.