no its not possible
since the mode is custom competetive the max bots are only 5

how to make it like infinite no like get (something) kills and you win???

u can add more bots with the console and that means u need to put on these commmands: mp_autoteambalance 0 mp_limitteams 99 and this next one depends on what team you're on if you're on Ct repeat this command in console bot_add_t and if you're on t side repeat bot_add_ct that's all i can say hope i helped ya