I (often) feel weak and tired.

我(经常)感觉虚弱乏力。

youdao

I always feel weak and tired.

我经常刚到无力，疲劳。

youdao

The voice is weak and tired.

他的声音很微弱，很疲惫。

youdao

On and on they marched. Many of them -- weak from hunger and tired beyond belief could go no farther.

VOA: special.2009.12.17

He told a friend that he felt very tired and weak.

VOA: special.2009.03.19

But that day she was tired and a little bit weak.

VOA: special.2009.09.05

By the mid-1950s, in fact, the townships were home to a majority of the country's black population, but they were such rough and rowdy places that many of the rural dispossessed chose not to join the urban rush too weak or too poor, too unskilled and too uneducated, too tired and too frightened to be comfortable in them.

NPR: One Boy's Heroism in the Face of AIDS