Half a years w has gone by!

Instead using exercise to reduce weight,of trying to lose weight by just exercising, I tried the “eat less” method and it works!

"I tried the 'eat less' method" sounds a little strange, but it could be okay depending on what you want to emphasize.
I would probably say something like, "I tried dieting and eating less and it works!"

But I still want to exercise for many other reasons.

Would be good to give a couple of the reasons here. This sentence sounds pretty vague.

My part time job salary is more than the formalmy full time job.

Formal job could be okay as well, but full time job is how we would usually say it.

Thanks toBecause of the virus in April my formal job schedule was work 4 days on and rest 4 days off.

IOn all the restmy off days I go to working forwork my part time job.

Half a years w has gone by!

Happy moments:

Instead of using exercise to reduce weight, I tried the “eating less” method, and it works!

My part -time job's salary is more than the formmy official job's.

Thanks to the virus in April, my formofficial job's schedule wasbecame work for 4 days and, then rest for 4 days.

In allDuring the rest days, I go to working for my part -time job.

My pay cheque for April was like a double and mormore than double!

Unhappy moments:

Focusing issues!

I want to be good at A, B, C, and many other hobbies.

I become a human octopus gotwith 8 soft and weak handlimbs.

But all we need is just one big gun!

The grammar is fine, but I don't understand the meaning or if it's supposed to be a continuation of the previous sentence?