https://github.com/gurnec/btcrecover allows you to create a token file, as long as you have a basic idear how your password should look (and it seems you do have a basic idear about this), it should be possible to bruteforce the password within a finite timeframe.

If you really have no clue how to setup john the ripper or btcrecover, you can always pay somebody to write a step by step guide (with screenshots) for setting up one of these tools on a clean VPS from a certain VPS service provider, that way you can create a clean VPS with the same provider and follow the step by step guide to setup your own bruteforce server...

Good luck!