You can buy a recipe for the solution from the masters of the genre, you can try to come up with it yourself, you can search the Internet. You can search for something worthwhile on Russian-language sites, but for those who really want to understand the topic, I recommend this English-language resource.
https://soapbubble .fandom.com/wiki/Soap_Bubble_Wiki . This is the best thing I've seen about bubbles in the public domain, and there are recipes (almost all existing in the world) and other equally useful information.
But I want to warn you right away that this is not a question of a "free recipe." You will spend a lot of time, effort and money on ingredients and experiments.
I should immediately note that working with a recipe is always difficult. It requires adaptation and constant monitoring.
A few notes that may be important before your experiments:
Fairy is constantly different now. Testing detergent and bubble base are still different. Moreover, indicators that are not important for washing dishes, but are important for inflating bubbles, may vary from the supplier of raw materials and the batch.
J-Lube tends to degrade. And the date of its production, the date of production of raw materials, and the method of storage can play a huge role.
Some polymers require dissolution in an acidic or alkaline environment. This must be taken into account. The temperature of the water during dissolution, the method of dissolution, and other nuances may also be important.
I want to warn you against purchasing recipes from someone with Avito. You need a mentor. A person who will help if necessary.
If you want to save money, do not understand the topic, find a working scheme and do not immerse yourself in the topic - concentrate is the best thing that can be. It's true.