Public and Private proxies usage for steam requests

[Wolvi]

Hello, i am beginner in node js programming and i have created atmost few tradebots, so the idea is that in order to maintain and scale my float bot i have to buy many private proxies that include both login and password, but the problem is that such proxies are quite expensive and harm my ROI, so the question is whether it is possible to send request not from private proxies, but from public one and to get data from endpoints that for example render 10 first listings on the itempage, and if so, then what module or instrument should i use? Thank you in advance