OP, here is an image that may help, though not the all-encompassing resolution you seek. It shows the bus numbers (and landmark destinations) just outside MRT station exits. The chart displays station exits along Line 2 (blue) subway line on Beijing Road reaching your Northern neighborhood:

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Similar image for MRT Line 1 (red) to the South:

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Buses outside exits of Line 3 for East to West:

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Line 6:

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Powerful, pre-built gaming rigs equipped with i5 (even i7) cpu and fast GPU are well under 1/3 of your asking price. Ask a friend to help you navigate reliable Taobao/Tmall stores. Buying imported motherboard, power supply, case, RAM, fans, etc. , separately yourself is not as cost effective these days, even via newegg for the tech savvy.

@Crazychopstick, DiDi app is a great tool for both bike renting and bus transit routes (your other topic inquiry).

The Chinese DiDi (滴滴出行) version allows both above-mentioned functions. While the English DiDi version only permits express car (cheaper)/ride sharing (cheapest) or pricier taxi hailing options like Uber/Grab.

DiDi is similar to WeChat app, in that the Chinese language version is like a multipurpose swiss army knife. The English WeChat & DiDi interfaces are more one-trick ponies. Hence, select Chinese language to unlock integrated bus route and bike renting features.

Application:

Didi bus transit routes ("公交" tab) show nearest bus stations and bus numbers from your current/departure point to destination with clear map navigation interface. The app also displays the nearest or most efficient options for bus transfers, as well as walking duration/distance to and fro bus stations.

I'm currently visiting a developing area in perhaps a fourth tier city, yet the transit info are still accurate and up to date. Thanks in part to DiDi being a massively funded national operation that pretty much monopolized the logistical side of China's ride hailing market. This requires precise lay of the land.

DiDi bike renting ("单车" tab) displays nearest 青拮 (qingjie) teal colored bicycles, which imho is superior and easier to ride than Mobike, Alipay's Hello bikes, Ofo (defunct?), or the red city bikes. DiDi own these newer teal bikes.

Important side note is after binding DiDi account to your phone number or WeChat, they require inputting Chinese ID name and number to verify age, as minors aren't permitted to rent them for safety reasons. Borrow ID info from a Chinese. It doesn't matter if they've already created a DiDi account in the past using same ID number. Your new DiDi account can successfully be verified regardless. Perhaps try this with the red bikes as well.

Not sure if only Chinese ID# (身份证号) is accepted, but if you scan the red bikes with WeChat's mini program, WeChat Pay is the way to pay.

I've yet to see any mini programs allowing Alipay as payment option. It's Tencent's way of defeating Alipay in e-payment market share.

I think OP may be referring to dockable red bikes the city government provides. Its free for first hour of use. Search for 叮塔出行 on your WeChat mini programs. Bike qr code scanner in the miniprogram. 叮塔 (Dingda) is probably the sound of the bike's bell, an onomatopoeia if you will.