Before I got married, I had used to ride my bicycle to go to work.

I was able to go to my office earlier than by taking a bus because my office was not far from my home.

Taking a bus was fast, as you know, but I shwould have to wait by the schedule, and I needed to walk from a bus stop to my office.

Even though I can't ride it bywith my kids these days, but I really, really like to ride it.

Before I got married, I used to ride my bicycle to go to work.

I was able to goet to my office earlier thansooner by taking athe bus because my office was not far from my home.

I think the distance isn't why you got there sooner, it's because you could cover the distance quicker by bike, so you could still mention the short distance and write"

'I was able to get to my office earlier than/sooner by taking the bus because I could cover the short distance to my office in less time.'

'a' bus works too but 'the bus' sounds more natural.

Taking a bus wais fast as you know, but I should wait by the schedule, and I needed tothat's not including having to wait for it to arrive and walking from athe bus stop to mythe office.

You could also write this in regards to yourself,
'Taking a bus is fast, but I had to wait for it to arrive and walk from the bus stop to my office, which took a while.'

Parking spaces for bicycles wereThere was bicycle parking spaces near my office, so I didn't need to have a long walk.

'so I didn't need to walk for long'. - Might work a bit better here.

Even though I can't ride it by my kids these days, but I reallymy bike much these days due to having kids, I really like to ride.

Really really is a bit strange. You could write 'I love to ride', 'I love to cycle', or even better 'I still love cycling!'