I often play games for a long time, but I must practice English, painting, and many other things.

You can play games in English to learn the language. What if you also tried watching painting videos on YouTube in English?

So, I makede my daily schedule today.

I couldn't stick to another plan, but I tried writing it on the whiteboard this time.

Maybe itHopefully, it would work better.

I often play games for a long time, but I (must / need to) practice English, painting and many other things.

"must" isn't wrong, but "need to" is a little more natural

So I makede a daily schedule today.

"will make" if you haven't done it yet, "made" if you have already done it. The later sentences sound like you did make it, so I used "made" here.

I couldn't stick to other plans, but I tried writing it on a whiteboard this time.

Maybe ithis will work better.

"this" is better than "it" here as the topic you've just been discussing is considered "here". It's a bit like the difference between これ and あれ

I often play games for a long time, but I must practice English, painting and many other things.

So I makede a daily schedule today.

I couldn't stick to other plans, but I tried writing it on the whiteboard this time.

Maybe it will work better.

I often play games for a long time, but I must practice English, painting and many other things.

So I makde daily schedule today.

I couldn't stick to other plans, but I tried writing it on whiteboard this time.

Maybe it will work better.

I often play games for a long time, but I must practice English, painting and many other things.

So, I makeam making a daily schedule today.

I couldn't stick to othermy previous plan, but I tried writing it on a whiteboard this time.

Maybe ithis will work better.

I often play games for a long time, but I must practice English, painting and many other things.

So I makede a daily schedule today.

I couldn't stick to other plan,s but I tried writing it on whiteboard this time.

Maybe it will work better./ Hopefully it works

you can use the phrase “hopefully it works” since I think it explains the meaning better

I often play games for a long time, but I must practice English, painting and many other things.

So I makede a daily schedule today.

I couldn't stick to the other plan, but I tried writing it on a whiteboard this time.

Maybe it will work better.