Random characters + sentences

记
对不起。我忘记了你的名字。
I’m sorry. I forgot your name.

要
吃饭前要洗手。
You should wash your hands before eating.

者
他是一个咖啡爱好者(or 迷) 
He is a coffee enthusiast!

万
你万肯定不喜欢烹调(做饭 is best)！
You definitely don’t like to cook!

只
我只在周末有时间。
I only have time at weekends.

使
他不会使(用 is best)电脑。
He can’t use a computer.

Random characters + sentences

记
对不起。我忘记了你的名字。 
I’m sorry. I forgot your name.

要
吃饭前要洗手。 √
You should wash your hands before eating.

者
他是一个咖啡爱好者 √
He is a coffee enthusiast!

万
你万（肯定）不喜欢烹调！
You definitely don’t like to cook!

The usage of 万 is not appropriate here. I'll list some examples:

1)quantifier

这辆车价值十万美元。

This car is worth 100,000 dollars.

一篇万字小说

a more-than-10,000-word novel.

2)universe, all

春天到来，万物生长。

Spring comes, everything grows.

祝你万事如意！

Wish everything goes well to you!

3)forever

陛下万岁！

Long live Your Majesty!

祝你万寿无疆。

Wish you a long life.

4)absolutely, definately

When in this meaning, 万 is usually fitted in specific words and idioms(成语). It can't be used independently.

我可以保证万无一失。

I can promise nothing will go wrong definately.

千万不要碰那个开关！

Do make sure not to touch that switch! ("千万" means do/be sure to, it's usually used in imperative sentences)

这件事万万不可这样做！

This matter is absolutely not OK to be done like this.

只
我只在周末有时间。 √
I only have time at weekends.

使
他不会使用电脑。 （他不会使电脑 is a dialect somewhere, and you should say "他不会使用(use)电脑" in standard Mandarin.）
He can’t use a computer.