Investing solo 401k into notes

[Ehab Tadrous]

Trying to recoup some of the losses for my 401k during 2022 by investing that using my self directed solo 401k into notes.

Which I have received a very enticing offer for short term return on small amounts to start and was provided these guarantees when I said it is too good to be true

 1. a promissory note with free and clear collateral 2. a jv agreement outlining the terms. 3. we'll use an eNotary like (docusign) so it's signed securely and additionally 4. A Personal Guranty that you can have your attorney hold onto for extra measures. 

Any idea or comments for this type of style of investment, anything to watch for ? Plus I have the paperwork of this company ??

Thanks

Ehab