How to Turn off Google Assistant Speech Output on Your Phone
Google Assistant can do many things, but it can’t intelligently adjust its volume. If you ask a question, it will blurt out the answer, sometimes louder than you want. Avoid those awkward moments by turning off speech output on Android smartphones.
Google Assistant Change Google Assistant Typing Instead கூகிள் உதவியாளர் மாற்றம் கூகிள் உதவியாளர் தட்டச்சு அதற்கு பதிலாக
Source: howtogeek.com