Small local banks are probably the best avenue to try.
One of the main issues besides the actual value and potential of your company is .....your business is only worth what it is because YOU are there running it. Be able to show a “business plan” that includes what’s happens if your not there for some reason, how the business will continue to operate in your absence.
I see one post suggesting private money where I think they are referring to “Angel Investors” some of them are not so angelic and usually only want opportunities with huge upside then take too much in return. The up side is usually NO collateral but they really have to believe in you - again your “Business Plan”.
Private money is how many of us go these days - which can be fine depending on the terms you can get. For collateral they may want something not tied to the business - like your house or other property. Most want 1st deeds of trust.
The bottom line will be the true value of your business vs what you intend to borrow the money for and how you can demonstrate how that will increase cash flow and profits.
Good luck
Funny, I havent had one bank ask me for a business plan yet. Not one.
I had three different people approach me a couple years ago.
First offered up 2.5million but wanted to be in charge of delivery but didnt know anything about the industry.
Second, wanted to take over sales and would pay me based on sales revenue.
Third, wanted me to bring in revenue sufficient to pay my employees and if I didn’t then I would pay him back.
So two of three were paying them to take the business and the other was a sure failure. Many investors just want access to your customer lists and not your business.